We shouldn't bother about past mistakes.

我们不应该计较过去的错误。

Don't bother about those trivial details.

别计较那些无关紧要的细节。

Don't bother about answering his letter.

你不必回复他的信。

He was too busy to bother about such trifles.

他太忙,不能为这些小事烦心了.

And do not bother about grammatical mistakes!

不要为语法错误而烦恼！

So why should I bother about what snobs think.

因此，我不必烦恼那些势力的人所说的话。

Don't bother about getting dinner for me today.

今天不要麻烦为我准备饭了。

Don't bother about it. I'll worry out the answer.

你别为这操心了，我会想出答案来的。

But why should I bother about businessman or engineer.

但我何必为商人、工程师们操心？

Do not bother about us - - we will join you later

别惦记我们，我们不久就和你们在一起了。