良机难再。

Opportunity knocks but once.

一而再，再而三

over and over again

再等几天

wait for another few days

再唱一遍

sing once again

再坐一会儿

sit for a little longer

再不要为了一点小事吵嘴

don't quarrel again over such a small matter

我们几时再见面？

When will we meet again?

现在再也没这种情况了。

This type of situation won't happen again.

必须再快一些。

It has to be faster.

再明白也没有了。

It couldn't be any clearer.

办得再好没有了。

It couldn't have been done better.

这样再好没有了。

It couldn't be better.

资料能再多一点就好了。

It would be good if there was a little more information.

再不走，就要赶不上火车了。

If we don't leave now we'll miss the train.

现在再不设法，那就来不及了。

If we don't think of a way then it will be too late.

工作一会儿再休息

work for a while then rest

自己先学会了再教别人

learn something oneself first, then teach others

搜集和准备好了材料再动笔

gather and prepare the data, then start writing

花园里种着芍药、茉莉，再就是玫瑰。

The garden is planted with peony and jasmine, as well as roses.