I don't need to understand the cause of this illness.

我不需去了解这个病的起因。

youdao

Now (that) you understand, I don't need to explain again.

既然你已明白，我没有必要再解释一遍。

youdao

Eg. You don't need to cook up an excuse, I understand.

你不必编造什么借口了，我明白。

youdao

Eg. You don't need to cook up an excuse, I understand.

你不必编造什么借口了，我明白。

youdao