We must try hard to improve our basic skills.

We can overtake him asas we try hard again!

只要我们再努一把力,是会赶上他的!

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You must try hard to improvement your command of English.

你必须下苦功努力提高对英语的运用能力.

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Jennifer: I think I would try hard to adapt myself to them.

珍妮佛: 我想我会努力尝试着使自己去适应他们.

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To achieve our goal, we must try hard to solve these questions.

要实现我们的目标我们必须努力解决solve这些问题.

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If you try hard enough, your dream will surely come true.

只要你尽力去做, 你的梦想一定会实现.

从ABC到英语会话100

Try hard to win success.

努力争取胜利.

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He said he would try hard to meet your wishes.

他说,他将尽力满足你们的愿望.

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So I try hard to find opportunities for people like you.

所以我努力为像你这样的人寻找机会.

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If you try hard, you will succeed.

如果你努力, 就会成功.

《现代英汉综合大词典》

Life generates methane, ammonia, oxygen, hydrogen, carbon dioxide, and many other gases.

生命生产出甲烷 、 氨气 、 氧气 、 氢气 、 二氧化碳以及其他气体.

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He was busy filling out the balloon with hydrogen.

他正忙着给汽球充氢气.

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Hydrogen is an important feedstock used in petrochemical enterprises � � hydrogenation process.

氢气是石化企业加氢工艺的重要原料.

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The characteristics of conversion processes and sorts of reactor are discussed.

用甲烷作原料制备氢气有重要意义.

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In the cells of living systems there are many elaborate chemical reactions.

在生命系统的细胞里有许多复杂的化学反应.

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Compounds can often split up by chemical reactions into their constituent elements.

化合物常能通过化学反应分解为构成该化合物的各个元素.

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Processes that consist of molecular changes are called chemical reactions.

包含分子变化的过程称作化学反应.

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The invention relates to a acid tromethamine salt , of which the formula is C 18 H 23 NO 5.

一种联苯乙酸氨丁三醇盐, 化学式为C18H23NO5.

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The simplest ratio of the ions in the crystal is known as the formula unit.

离子晶体的单位化学式就是其中不同离子间的最简比.

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He can never write chemical formulas correctly for chemical reactions.

他总是不能准确地写出化学反应的化学式.

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Teacher: Donald, what is the chemical formula for water?

老师: 唐纳, 水的化学公式是什么?

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