I'd like to ask you about sth..

He had lost sth. in his house.

他屋里少了东西。

Have the power, means or opportunity to do sth.

有能力、办法或机会做某事。

When you study hard, you'll need sth. to break the routine.

当你进行艰苦的学习时，需要其他活动调剂一下。

This is sth. quite unexpected!

这真是想不到的事！

There is no point in spurning sth.

鄙视某事物是毫无意义的

So long time, not being here to write sth.

我当时，也还没和小姚在一起。

It is better to prod a person into action than to implore him to do sth.

请将不如激将。

Let's find sth. that highbrows and lowbrows alike can enjoy.

怎样才能雅俗共赏才好。

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

学之弗能，弗措也。

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。