second thought

英 [ˈsekənd θɔːt]

美 [ˈsekənd θɔːt]

n. 深思熟虑;仔细的考虑; 怀疑;疑虑

Collins.1

柯林斯词典

N-SING 深思熟虑;仔细的考虑
If you do something withouta second thought, you do it without thinking about it carefully, usually because you do not have enough time or you do not care very much.
1. This murderous lunatic could kill them both without a second thought...
  这个杀人狂会不假思索地把他们两个都杀掉。
2. Roberto didn't give a second thought to borrowing $2,000 from him.
  罗伯托没有细想就从他那儿借了 2,000 美元。
N-PLURAL 怀疑;疑虑
If you havesecond thoughts abouta decision that you have made, you begin to doubt whether it was the best thing to do.
1. I had never had second thoughts about my decision to leave the company.
  我从未怀疑过自己当初离开公司的决定。
PHRASE 转念间，经过重新考虑后(突然改变主意)
You can sayon second thoughtsoron second thoughtwhen you suddenly change your mind about something that you are saying or something that you have decided to do.
1. 'Wait there!' Kathryn rose. 'No, on second thought, follow me.'
  “在那儿等着！”凯瑟琳站起身来，“不，我改主意了。跟我来。”

noun

thinking again about a choice previously made
1. he had second thoughts about his purchase
Synonym:reconsiderationafterthoughtrethink

I said I wouldn't do it, but on second thought I think I will.
我说我不会做此事，但再细想一下我想我是会做的。
On second thought, let's have Chinese food tonight.
经重新考虑后，我们今晚还是吃中国莱吧？
On second thought, I decided to buy a tie.
进一步考虑后，我决定买一条领带。
B: On second thought, I will have a cup.
仔细想过之后，我想我还是要一杯。
On second thought, I'm going home on this vacation.
仔细想了之后，我打算回家休假。
By the way, if it still will hire you, have a second thought about the company.
顺便说一下，如果它要继续雇用你，仔细考虑这个公司。
Roberto didn't give a second thought to borrowing$ 2,000 from him.
罗伯托没有细想就从他那儿借了2,000美元。
I had never had second thoughts about my decision to leave the company.
我从未怀疑过自己当初离开公司的决定。
On second thought, let's not bother.
经重新考虑后，我们不打搅了。
She began to think she was wrong after a second thought.
经过重新考虑后，她开始认为她错了。