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

On second thought, I am not going to Kunming.
经重新考虑我不去昆明。
He have intended to go, but on second thought, he give up the idea.
他本来想去，但进一步考虑后，打消了这个念头。
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。
You know, on second thought, I won't be driving youto school.
仔细想想，我还是不送你去上学了。
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 have Chinese food tonight.
经重新考虑后，我们今晚还是吃中国莱吧？
I'll wait here. No, on second thought, I'll come with you.
我就在这儿等。不，再一想，我还是跟你一起走。
But on second thought, he realized he had offended many people.
继而一想，今天这一举，可是得罪了许多人。
On second thought, I guess he did do miracles.
转念一想，我想他也彰显了神迹。
On second thought, let's not bother.
经重新考虑后，我们不打搅了。