释义：

have second thoughts 重新想想

表示“重新想想”的意思。为了修改已经决定的事情而提出建议。如果说 not give it a second thought 的话就表示“不会重新考虑”，即“不担心某事”。

例句：

We're having second thoughts about it.
我们正在重新考虑。
Don't give it a second thought.
不要担心。
On second thought, I will have another cup of coffee.
重新想了想，我还是再来一杯咖啡吧。

对话：

A: Did you decide not to get married to Tim?
你决定不和提姆结婚了？
B: Yes, I had second thoughts about our relationship.
恩，我再三考虑了我们俩之间的关系。