1. I'm having some second thoughts about moving to a new city.
对于搬到新城市，我正在产生一些犹豫。 2. On second thought, I think I'll have the tea instead of coffee.
仔细想想，我想喝茶而不是咖啡。 3. He decided to quit his job without a second thought.
他毫不犹豫地决定辞职。

A: Are you sure you want to buy this expensive car?
A：你确定要买这辆昂贵的车吗？

B: Actually, I'm having some second thoughts.
B：事实上，我正在产生一些犹豫。

1) 重新考虑

2) 犹豫不决

3) 再次思考

1. 重新考虑，犹豫

e.g.
After some second thoughts, he decided to stay.
经过一番重新考虑，他决定留下。

phrase

1. To reconsider a decision or an idea, often due to doubt or hesitation.

Synonym: reconsider, hesitate