earn和money之间用不用the？用的话是什么时候用？？？

earn a living 这是谋生的意思 比make money 要高级

make/earn money

挣钱，赚钱

　　赚钱就是获取利润，挣得钱财。是通过自身的资本或者劳动力产生收入的一个过程。那么你知道吗?下面来学习一下吧。 　　赚钱的英语说法1： 　　make money 　　赚钱的英语说法2： 　　earn money 　　赚钱的英语说法3： 　　make a profit 　　赚钱的相关短语： 　　努力赚钱 Make money ; Efforts to make money ; Trying to make money 　　快速赚钱 Greater Gold ; Fast Money 　　容易赚钱 Money for old rope 　　赚钱的英语例句： 　　1. The owners don"t want to overlook any opportunity to make a buck. 　　老板们不想错过任何可以赚钱的机会。 　　2. Who brings up the baby and who brings home the bacon? 　　是谁抚养孩子的，是谁赚钱养家的? 　　3. Making easy money has always been an attractive proposition. 　　轻松赚钱总是件诱人的事。 　　4. In her extreme youth, Maria had sold her sexual favours for money. 　　玛丽亚在非常年轻的时候，曾靠卖淫来赚钱。 　　5. I was old enough to work and earn money. 　　我已经长大了，可以工作赚钱了。 　　6. The dealers profited shamefully at the expense of my family. 　　这些经销商通过损害我家人的利益不光彩地赚钱。 　　7. One wine shop is coining money selling Wembley-label champagne. 　　一家葡萄酒商店正在靠出售威丽牌子的香槟大把大把赚钱。 　　8. I think every business"s goal is to make money. 　　我认为各家公司的目的都是赚钱。 　　9. It was quite a lucrative sideline. 　　这份 *** 很赚钱。 　　10. She was always out earning. 　　她总是在外面赚钱。 　　11. The pany said the service was uneconomic. 　　公司说这项业务不赚钱。 　　12. a cash bonanza for investors 　　投资者的赚钱机会 　　13. a stepping stone to a more lucrative career 　　涉足更赚钱的行业的敲门砖 　　14. to make money on the stock market 　　在股票市场上赚钱 　　15. He always has an eye to making money whatever his plans are. 　　不管他的计划如何,他的目的就是赚钱.

make money, earn money, make dollars, make profit.

赢得，取得，赚得earn money 赚钱 earn a living 谋生；活命 earn interest 赚取利息

“makemoney”和“earnmoney”这两词组都有“挣钱”的意思。但两者之间却有轻微的区别。“earnmoney”较为强调用劳力、脑筋、知识、透过一段时间的劳动、提供服务、等获取相对比较合理的报酬。时间性可能会比较长。“makemoney”比较多用於买卖交易、灵活变通、等不经常性活动，有时候付出与收获不成比例。时间性方面有时可能只是一单交易而矣。

She earns 5 times as much money as mine.

动词不定式作表语

earn money for sb为某人赚钱A man has a duty to earn money for his family. 男人有挣钱养家的责任earn sb money,没有见过这种用法

搭配不同 意义相近 可以互换使用

Money is regarded by some people as the most importent thing in life. It is even regarded as the symbol of wealth and social position. For example, with plenty of money a man can do whatever he wants to. He can afford expensive cars and luxurious houses, and he can travel around the world and visit as many interesting places as he wants to. In their eyes, money is everything in life.In my opinion, money can both benefit people and do harm to them. On the one hand, we can"t deny that money is useful. We need money to buy food, buy a house or pay our education cost. Money can make us live more comfortably. For example, with more money, we can help others and take part in more social activities and receive a good education, thus increasing our knowledge and developing our skills. On the other hand, some people try to get money by dishonest means, for example, they often cheat and gemble, even rob and kill people. Sooner or later, they will be punished by the law. Money can bring them nothing but misery.In addition, money can not buy everything, For instance, no matter how much money one hast he can not buy good health, happiness or friendship, Although money is useful in many ways, there are still a lot of things that money can"t buy in the world. In addition, money can also do harm to us. If a person really thinks of money as everything and pays his attention only to money, he will lose his friends, or even the care and warmth from his family. Thus, it brings him only loneliness.

gdsjfgdshjfkldg"ffkd;lfgkldg;lgd;lkgd;l

t是形式主语，it可以做的除了形式主语还有形式宾语，后面的不定式toearnmoney才是真正的主语，但是在句式中用it替代，而且

money is very useful

翻译：他们可能教的很好，而且不仅仅是为了挣的钱。

你好！翻译为：挣钱娶儿媳妇！希望能够帮到你！

"When one was young fond dream, forget all along right away never , look for the most beautiful bride " of in the world, this is a song inside"s , natural I also have this fond dream , the fond dream is not that such is muonic only , when one was young. Mother has caught one kind of upper disease of breath when pawning my 5 , 6-year-old, the paroxysm has been especially cruel in raining when Yue Shi damp. During the period of the Guilin hospital is in hospital, I have also gone to. That time is a very sensible child , mother asks that what my ideal is , I criticize me serving as one doctor right away in the future , cures good your disease. This is that the first of me is ideal. To have been in less than how long , mother state of illness more and more heavy , have issued the certificate being critically ill, the hospital , has had no choice but, mother leaves me having gone to Hebei. Childhood has past very quickly , I have mounted junior middle school and has lived school. Have been in love during the period of the second day, that girl student shouts gorgeous, smiling expression is very charming, and pretty careful, still , finclause the shift spends. Everybody is bustling about New Year"s Day before section, sending card , our and everybody to say card I am fond of scenery"s more. Many star pictures is in popular at that time , being a star"s, except her therefore I receive. She has given me especially beautiful two scenery towards, I am preserving now. Fond dream that time, is to want to thin out with the tourist hand in hand together with him. Junior middle school will go over soon also very much , gorgeous have gone to Dong Guan work. I leave Guilin having arrived in Hebei mother here , fix high school , am admitted to Shan Dong University. This moment my initial fond dream has had a change , I have not been fond of the hospital atmosphere, therefore I have chosen computer special field. I have told my first love , she has been very happy, that is moreover annual we get rid of the Guilin city together playing , she says in winter, she has already finished working many years, but I as early as being at school, reason why is cost ought to she take place, we have played for a week or so , feeling happy suitable in Guilin. She speaks to me but not too long after that, our experience and future depend on two worlds already completely , wish that I live with happily, she has disappeared from my world thereupon completely , so approximately so direct. My university has also graduated very quickly, father mother self is chosen self delighted city , nonutility is considered them , I am grateful to them very much by me, I want to take a look at outside prosperous world , reason why but indeed , the place that I distant very much in leaving home is studied and work. Have left school to now having also had 1 year , have known gorgeous choice also deeply. What having criticized such strong point , desire not having criticized self yet is after all. Have experienced so much thing , have I think that owning , friendly sentiment , love ought to need to cherish self, kiss feeling. Therefore I am final, the fond dream is: "Hope that the people who loves me and the people that I love are all happy "

Most people need to work.If someone loses his job,he may be nervous and wants to find a new job as fast as possible.And even some people give up his spare time because of working.But have you ever thought this question:why should we workuff1f In my opionion,the basic reason is that we need to work to make a living.If we work, we can get award—money,which is necessary for us to live. So it is an important way to earn money for most people. But if we only work for money ,our lives will become boring and hopeless.Working also provide us a way to realize our dreams.For exampleuff0cjust like Ma Yun,who is a famous businessman,worked hard to earn much money to support his business—online shopping.He had been a teacher,a translater and so on.And finally he made a challenge in Internet with the money that he earnd through his hard work.With his talent and effort ,he succeeded.So working is a way for us to get close to our dream and let it come true. Whatu2019s more,our working has a great effect on our society,which promotes our society to develop.Our society needs teachers,doctors,drivers,cooku2026u2026Only with all the labor force can our society run healthily.Maybe you might feel that your work is tiny,but it can make differences for our society. The last but no least,work can inprove our feelings of happiness.Recently,there is a concerned word on the internet saying “what makes us feel delighted is that you have something to struggle for and look forward to.”Though working ,not only can we get the reword for living ,but also can we enrich our lives.Being busy and do the meaningful job are the good ways to be satisfied to the world. So working is a hard but meaningful thing in our lives.Working hard is not only good for ourselves but also our society.Work hard,please!

。我只有一句，没有查过，可是觉得不错，自己看看吧。Remember the feel that my lips against yours, for it was real.记住我吻你的感觉，因为这是真心的。英语直译的话，是，记住当我的嘴唇碰上你的嘴唇的感觉，因为他是真的。

蔼然可亲、蔼然仁者、安然如故、安然无事、安然无恙 岸然道貌、黯然伤神、黯然神伤、黯然失色、黯然无色 黯然销魂、昂然直入、昂然自得、昂然自若、傲然挺立 傲然屹立、勃然变色、勃然大怒、勃然奋励、惨然不乐

不反应，发过来Na2CO3与SiO2可以反应

规定的，先写阳离子（团）再写阴离子（团）

错误。正确为：庞然大物是一个汉语成语，拼音是páng rán dà wù。意思是指高大笨重的东西。现也用来形容表面上很强大但实际上很虚弱的事物。出自唐代柳宗元《黔之驴》。出处：黔无驴，有好事者船载以入，至则无可用，放之山下。虎见之，庞然大物也，以为神。蔽林间窥之，稍出近之，慭慭然，莫相知。译文：黔地这个地方本来没有驴，有一个喜欢多事的人用船运了一头去。驴运到后却没有什么用处，就把它放置在山脚下。老虎看到驴是个庞然大物，以为它是什么神物，躲藏在树林里偷偷看它，渐渐小心地出来接近它，惊恐疑惑，不知道它是什么东西。故事：从前贵州一带没有毛驴，有好事者从北方运来一头毛驴放到山脚下吃草，山上的老虎发现了这个庞然大物，开始只有远远的望着，然后慢慢地靠近毛驴，被毛驴大叫吓了一跳，后发现毛驴只能用蹄踢，再也没有别的本事就跳上去饱餐一顿。

Na2CO3是碳酸钠，碳酸钠的水溶液呈碱性，且有一定的腐蚀性，能与酸发生复分解反应，也能与一些钙盐、钡盐发生复分解反应。溶液显碱性，可使酚酞变红。碳酸钠是一种重要的无机化工原料，主要用于平板玻璃、玻璃制品和陶瓷釉的生产。还广泛用于生活洗涤、酸类中和以及食品加工等。 碳酸钠用途 碳酸钠是重要的化工原料之一，广泛应用于轻工日化、建材、化学工业、食品工业、冶金、纺织、石油、国防、医药等领域，用作制造其他化学品的原料、清洗剂、洗涤剂，也用于照相术和分析领域。其次是冶金、纺织、石油、国防、医药及其它工业。玻璃工业是纯碱的最大消费部门，每吨玻璃消耗纯碱0.2吨。在工业用纯碱中，主要是轻工、建材、化学工业，约占2/3，其次是冶金、纺织、石油、国防、医药及其他工业。 碳酸钠危害 该品具有弱刺激性和弱腐蚀性。直接接触可引起皮肤和眼灼伤。生产中吸入其粉尘和烟雾可引起呼吸道刺激和结膜炎，还可有鼻粘膜溃疡、萎缩及鼻中隔穿孔。长时间接触该品溶液可发生湿疹、皮炎、鸡眼状溃疡和皮肤松弛。接触该品的作业工人呼吸器官疾病发病率升高。误服可造成消化道灼伤、粘膜糜烂、出血和休克。

Na 23 C 12 O 16 相对分子质量=23×2+12+16×3=106

【成语】： 庞然大物【近义词】： 硕大无朋、大而无当【反义词】： 微乎其微、微不足道【拼音】： páng rán dà wù【解释】： 庞然：高大的样子。指高大笨重的东西。现也用来形容表面上很强大但实际上很虚弱的事物。【出处】： 唐·柳宗元《黔之驴》：“虎见之，庞然大物也，以为神，蔽林间窥之。”【举例造句】： 这家伙看上去像个庞然大物，其实一点能耐也没有。

1.碳酸钙与盐酸反应生成氯化钙,水和二氧化碳caco3+2hcl==cacl2+h2o+co2↑2.碳酸钙在高温条件下分解生成氧化钙和二氧化碳caco3==高温==cao+co2↑3.碳在氧气中点燃生成二氧化碳c+o2==点燃==co2

然四字成语有哪些 ： 不以为然、 怦然心动、 泰然处之、 理所当然、 突然袭击、 恍然大悟、 肃然起敬、 焕然一新、 秩序井然、 悠然自得、 勃然变色、 浑然天成、 蔚然成风、 春意盎然、 安然无恙、 庞然大物、 巍然屹立、 怡然自得

庞然大物 相关的反义词娇小后珑 小巧后珑娇小玲珑小巧玲珑庞然大物_词语解释_词典【拼音】：[páng rán dà wù]【释义】：庞然：高大的样子。指高大笨重的东西。现也用来形容表面上很强大但实际上很虚弱的事物。

算了.. 不丢人了

第一个 用来 是说用船载着用来进入 2 认为 就是认为是神或认为是神奇的事（不知道你完整原句是什么） 3 这里庞然是指高大的样子,如果非要解释然的话,大概是个助词,无实意. 4 但是 表转折 但是来往的人都看着他 话说 你不是在翻译黔之驴吧.

井然有序

na2co3溶于水。碳酸钠分子量105.99。碳酸钠化学品的纯度多在99.5%以上，因而又叫纯碱，但分类属于盐，不属于碱。国际贸易中又名苏打或碱灰。它是一种重要的有机化工原料，主要用于平板玻璃、玻璃制品和陶瓷釉的生产。还广泛用于生活洗涤、酸类中和和食品加工等。

庞然大物，比喻一个东西很大

成语： 不期而然 〖释义〗期：希望；然：如此。不希望这样，而竟然这样。表示出乎意外。 道貌岸然 〖解释〗道貌：正经严肃的容貌；岸然：高傲的样子。指神态严肃，一本正经的样子。 处之泰然 〖解释〗处：处理，对待；泰然：安然，不以为意的样子。若无其事的样子。形容自理事情沉着镇定。也指对待问题毫不在意。 春意盎然 〖解释〗意：意味；盎然：洋溢，深厚。春天的意味正浓。 大谬不然 〖解释〗谬：荒谬，错误；然：如此，这样。大错特错，完全不是这样。 大义凛然 〖解释〗大义：正义；凛然：严肃、或敬畏的样子。由于胸怀正义而神态庄严，令人敬畏。 浩气凛然 〖解释〗浩气：即正气，刚直正大的精神；凛然：严肃，令人敬畏的样子。浩然之气令人敬畏。 环堵萧然 〖解释〗环堵：玶着四堵墙；萧然：萧条的样子。形容室中空无所有，极为贫困。 毛骨悚然 〖解释〗悚然：害怕的样子。汗毛竖起，脊梁骨发冷。形容十分恐惧。 兴味索然 〖解释〗兴味：兴趣、趣味；索然：毫无兴致的样子。一点儿兴趣都没有。 须眉浩然 〖解释〗胡须眉毛都白了。形容年老。

水解生成NAOH和NAHCO3，由于NAOH不挥发，当溶液快干时NAOH又与NAHCO3反应生成NA2CO3，所以不变。碳酸钠（Nau2082COu2083），分子量105.99。化学品的纯度多在99.5%以上（重量），因而又叫纯碱。国际贸易中又名苏打或碱灰。它是一种重要的有机化工原料，主要用于平板玻璃、玻璃制品和陶瓷釉的生产。还广泛用于生活洗涤、酸类中和和食品加工等。

可以和酸反应生成二氧化碳。Na2CO3+2HCl=2NaCl+H2O+CO2和盐反应可以，如和氯化钙反应生成碳酸钙和水。可以和碱反应生成碳酸氢钠。

属于语气助词

1. 带然字的四字词语40个 带然字的四字词语：怦然心动、春意盎然、蔚然成风、焕然一新、浑然天成、悠然自得、理所当然、泰然处之、突然袭击、勃然变色、安然无恙、庞然大物、油然而生、轩然 *** 、戛然而止、截然不同、井然有序、巍然屹立、哑然失笑、酣然入梦、生机盎然、潸然泪下、大义凛然、涣然冰释、豁然开朗、索然无味、勃然大怒、兴味盎然、毅然决然、道貌岸然 等。 扩展资料 词语解释 1、怦然心动 拼音：pēng rán xīn dòng 含义：心怦怦地跳动 造句：听到他的主意后，我怦然心动，立即表示赞同。 2、春意盎然 拼音：chūn yì àng rán 含义：春天的意味正浓 造句：在公园里，处处可看到春意盎然的景色。 3、蔚然成风 拼音：wèi rán chéng fēng 含义：形容一件事情逐渐发展、盛行，形成一种风气（多指好的）。 造句：“学雷锋，学赖宁”的活动已经在校园里蔚然成风。 4、焕然一新 拼音：huàn rán yī xīn 含义：形容出现了崭新的面貌 造句：为了迎接出差归来的妈妈，我特地把房间打扫得焕然一新。 5、浑然天成 拼音：hún rán tiān chéng 含义：形容诗文结构严密自然，用词运典毫无斧凿痕迹。亦形容人的才德完美自然。 造句：真实的感情是浑然天成的，单纯的，自然并且简单。 2. 用然组四字成语什么然正气 1、凛然正气 lǐn rán zhèng qì 【解释】凛然：整肃而又可敬又可怕；正气：正直的气概。形容极威严的英雄气概，使人敬畏 【出处】陶斯亮《一封终于发出的信》：“您当时神态是那样地严肃，坦然，眉宇间凛然正气，使我仅有的一点疑问如烟消云散了。” 【结构】偏正式 【用法】作宾语、定语；用于人的气概 【近义词】浩然正气 【例句】古华《芙蓉镇》第一章：“一种男子汉的凛然正气，充溢他心头，涨满他胸膛。” 2、浩然正气 hào rán zhèng qì 【解释】浩然：盛大、刚直的样子；气：气概、精神。指正大刚直的精神、气质 【出处】老舍《兔儿爷》：“抗战建国须凭真实本领与浩然正气，只能迎时当令充兔子王的，不作汉奸，也是废物。” 【结构】偏正式成语 【用法】作主语、宾语；指正大刚直的精神 【近义词】浩然之气 【例句】王朔《懵然无知》：“于德利一脸浩然正气，昂首走进招待所大门。”

2NaHCO3=Δ== Na2CO3+ H2O + CO2↑ Na2CO3 = CO2 + Na2O 固体碳酸钠在850度以上会分解生成氧化钠和CO2

（戛）然而止，（了）然于心，（蔚）然成风，（绝）然而去，（油）然而生，（毅）然决然，（凛）然不屈，（截）然不同，（悠）然自在，（泰）然自若，（潸）然泪下，（跃）然纸上（断）然拒绝，（索）然无味，（巍）然耸立，（漠）然视之，（黯）然神伤，（寂）然无声，（贸）然从事，（飘）然而至，（勃）然大怒，（哑）然失笑，（超）然物外

根据电离，水解平衡关系不难写出！(1)na2co3==2na+co32-co32-+h2o<==>hco3-+oh-hco3-+h2o<==>h2co3+oh-h2o<==>h++oh-(2)物料守恒:c(na2co3)==)[co32-]+[hco3-]+[h2co3]c(na+)==2*{[co32-]+[hco3-]+[h2co3]}(3)电荷守恒:[na+]+[h+]==[oh-]+[hco3-]+2[co32-](4)质子守恒:[oh-]==[h+]+[hco3-]+2[h2co3]

然荻读书然糠照薪然糠自照然然可可蔼然可亲蔼然仁者安然如故安然无事安然无恙岸然道貌黯然魂消黯然魂销黯然伤神黯然神伤黯然失色黯然无光黯然无色黯然无神黯然销魂昂然而入昂然挺立昂然直入昂然自得昂然自若傲然挺立傲然屹立勃然变色勃然不悦勃然大怒勃然奋励勃然作色惨然不乐灿然一新粲然可观冁然而笑冁然一笑怅然若失怅然自失绰然有余超然避世超然不群超然独处超然独立超然绝俗超然迈伦超然物外超然象外超然远举超然远引超然自得超然自逸超然自引瞠然自失怆然泪下怆然涕下怛然失色淡然处之淡然置之荡然肆志荡然无存荡然无遗荡然无余荡然一空断然不可断然处置断然措施幡然改途幡然悔悟翻然改悔翻然改进翻然改图翻然改悟翻然悔过翻然悔悟斐然成章斐然可观斐然乡风斐然向风废然而反废然而返废然思返忿然作色愤然作色嗒然若丧怫然而怒怫然不悦怫然作色艴然不悦果然如此酣然入梦悍然不顾浩然正气浩然之气赫然而怒赫然耸现赫然有声涣然冰释涣然冰消焕然冰释焕然如新焕然一新恍然大悟恍然若失恍然自失惠然肯来惠然之顾浑然天成浑然无知浑然一体浑然自成混然一体混然天成豁然大悟豁然顿悟豁然贯通豁然开朗豁然开悟豁然确斯豁然省悟豁然雾解火然泉达霍然而愈计然之策计然之术寂然不动寂然无声戛然而止斠然一概孑然无依孑然一身截然不同井然有条井然有序憬然有悟迥然不群迥然不同慨然领诺慨然应允慨然允诺忾然叹息溘然而去溘然而逝溘然长逝溘然长往块然独处岿然不动岿然独存喟然而叹喟然太息喟然叹息喟然长叹廓然无累了然可见了然无闻了然于怀了然于心了然于胸了然于中嘿然不语莞然而笑莞然一笑凛然不可犯凛然正气芒然自失茫然不解茫然不知所措茫然费解茫然莫知所措茫然若迷茫然若失茫然失措茫然无知茫然自失蒙然坐雾懵然无知靡然成风靡然顺风靡然向风靡然从风靡然乡风渺然一身冥然兀坐漠然不动漠然视之漠然置之默然无声默然无语苶然沮丧判然不同判然两途庞然大物怦然心动飘然若仙飘然欲仙飘然远翥凄然泪下悄然无声愀然变色愀然不乐愀然无乐跫然足音阒然无声确然不群潸然泪下舍然大喜爽然若失爽然自失竦然起敬肃然起敬肃然生敬肃然危坐索然寡味索然俱散索然无味泰然处之泰然居之泰然自得泰然自若坦然自若陶然而醉陶然自得恬然自得恬然自足同然一辞突然袭击宛然如生宛然在目惘然如失惘然若失望然而去之巍然不动巍然耸立巍然挺立巍然屹立嵬然不动蔚然成风萧然尘外萧然四壁萧然物外欣然命笔欣然自得欣然自乐欣然自喜轩然大波轩然霞举泫然流涕学然后知不足褎然冠首褎然居首褎然举首哑然大笑哑然而笑哑然失笑哑然一笑哑然自笑嫣然一笑奄然而逝晏然自若杳然黄鹄依然故态依然故我依然故吾依然故物依然如故夷然不屑夷然自若怡然理顺怡然养寿怡然养性怡然自得怡然自乐怡然自若怡然自娱怡然自足屹然不动屹然山立

NaHCO3、Na2CO3的电离方程式： NaHCO3 = HCO3- + Na+ Na2CO3 = 2Na+ + CO32- NaHCO3、Na2CO3的水解方程式： HCO3- + H2O = H2CO3 + OH-(“=”采用双箭头，即反应可逆） CO32- + H2O = OH- + HCO3- (“=”采用双箭头，即反应可逆）

是重要的化工原料之一, 用于制化学品、清洗剂、洗涤剂、也用于照相术和制医药品。 绝大部分用于工业，一小部分为民用。在工业用纯碱中，主要是轻工、建材、化学工业，约占 2/3；其次是冶金、纺织、石油、国防、医药及其它工业。玻璃工业是纯碱的最大消费部门，每吨玻璃消耗纯碱0.2吨。化学工业用于制水玻璃、重铬酸钠、硝酸钠、氟化钠、小苏打、硼砂、磷酸三钠等。冶金工业用作冶炼助熔剂、选矿用浮选剂，炼钢和炼锑用作脱硫剂。印染工业用作软水剂。制革工业用于原料皮的脱脂、中和铬鞣革和提高铬鞣液碱度。还用于生产合成洗涤剂添加剂三聚磷酸钠和其他磷酸钠盐等。食用级纯碱用于生产味精、面食等 【禁配物】强酸、铝、氟!!!

恍然大悟 豁然大悟

自然、然而、猛然、宛然、悄然、偶然、显然、突然、居然、仍然、虽然、毅然、既然、讶然、骤然、猝然、陡然、俨然、佁然、茫然、诚然、潸然、凛然、怃然、赧然、岸然、酣然、惨然、凄然、屹然、泫然、哄然、飘然、默然、怦然心动、泰然处之、突然袭击、理所当然、浑然天成、勃然变色、焕然一新、悠然自得、春意盎然、蔚然成风、安然无恙、庞然大物、巍然屹立、油然而生、戛然而止、井然有序、截然不同、轩然大波、酣然入梦、生机盎然、哑然失笑、潸然泪下、大义凛然、勃然大怒、索然无味、豁然开朗、兴味盎然、毅然决然、道貌岸然、黯然销魂、防患未然、正气凛然、自然而然、自然经济、自然规律、果不其然、

Na2Co3是碱性,它是一种盐,属于强碱弱酸盐呈碱性高中会讲到.酸:阳离子是氢离子,阴离子是酸根离子(除了氧离子,氢氧根之外的其他阴离子都可以称为酸根离子)盐:金属离子(包括铵根离子)+酸根离子组成的化合物碱:金属离子+氢氧根离子组成的化合物

勃然大怒、恍然大悟、庞然大物、轩然大波、怦然心动、 愀然不乐 、 巍然不动