within reason

理智的, 合理的

例句与用法：

I want you to have a good time tonight, within reason.

愿你今晚玩个痛快，但不要过分。

I'll do anything within reason to earn my living.

为了谋生，只要是正当的事我什麽事都做。

He explained the behavior of the old man within reason.

他从道理上解释了这个老人的行为。

I will sell the house at a price within reason.

我将以合理的价格出售这幢房子。