have second thoughts
US /hæv ˌsek.ənd ˈθɑːts/
UK /hæv ˌsek.ənd ˈθɑːts/

成语
1.
打退堂鼓, 改变主意
to change your mind about something, or to start to doubt a decision you have made
示例:
•
I was going to buy that car, but I'm starting to have second thoughts.
我本来要买那辆车,但我开始打退堂鼓了。
•
She agreed to the plan, but later she had second thoughts.
她同意了那个计划,但后来她改变了主意。
在 Lingoland 学习这个单词