If you find sth. difficult to learn, do not give up.

I would like to take the opportunity to express my opinions about sth.

我想利用这个机会来表达我对某事的看法。

Carry sth. to a new stage in its development

把某事物推进到一个新阶段

It was a waste of time if we would not have changed sth.

如果我们都不改变的话，那我们就是在浪费青春！

This has sth. to do with you.

这与你有关。

It's sth. within my duty.

这是我分内的事。

If you don't anticipate what may happen, you'll find yourself at a loss when sth. crops up.

你如果没有思想准备，事到临头就会抓瞎。

off sth. We should take him off the project.

我们应该让他退书任务。

The policemen kept blackmailing him, because they had sth. on him.

那些警察之所以经常去敲他的竹杠是因为抓住把柄了。

I repeat sth. for three times because it is more the important.

重要的事情说三遍。

The Research and Application about SB-1 Organic Boron Cross-Linking Agent

SB-1有机硼交联剂研究及应用

Please give my regards ( to sb.) when you write.

写信时请替我带上一笔。

to free sb, especially from legal, political or social restrictions.

解放；使不受束缚

The As, Sb and C contents are high in the ores.

矿石中As、Sb及有机碳含量较高。

Express one's great respect for sb;

对某人表示崇高的敬意；

to love sb, especially in a way that is based on strong affection or a feeling of wanting to protect them, rather than sex

爱某人，尤指以强烈的感情或想要保护他们的感觉为基础，而不是性。指深深地爱、非常喜欢。例：

It sounds like sb.'s knocking on the door.

像是有人在敲门。

keep sb sweet Definition: to try to keep someone satisfied and pleased with you so that you can continue to get what you want

定义：取悦（某人），讨好某人

Study on MS fragmentation and its thermal stability of Sb organic compound

锑有机化合物的质谱及其热稳定性研究

Ask sb. to take her a message.

请人带个话给她。

The interference of Sb on the determination was also looked into.

查明Sb对杂质元素测定的干扰。