美 [ˈsekənd θɔːt]
犹豫：指在考虑后改变主意或开始怀疑。
改变主意：指改变对某事的看法或决定。
second thought //
单数型名词 If you do something without a 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. 再次考虑
This murderous lunatic could kill them both without a second thought.
这个杀人狂会毫不犹豫地把他们两人都杀掉。
复数型名词 If you have second thoughts about a decision that you have made, you begin to doubt whether it was the best thing to do. 转念
I had never had second thoughts about my decision to leave the company.
我从未对离开那家公司的决定有过别的想法。
习语 You can say on second thoughts or on second thought when you suddenly change your mind about something that you are saying or something that you have decided to do. 转念一想
"Wait there!" Kathryn rose. "No, on second thought, follow me."
“等等！”凯瑟琳站了起来。“不，转念一想，跟我来吧。”
thinking again about a choice previously made
同义词： reconsideration / afterthought / rethink
... about-face 向后转 afterthought 事后的想法 second thought 再三考虑 ...
... Sb.’s Eyes Are Bigger than His Stomach / Belly 眼睛大，肚子小；眼高手低 Second Thought 再三考虑，认真思索 Sell One’s Soul 出卖自己的灵魂 ...
重新考虑；改变主意
He dived in after her without a second thought.
他不假思索地随她跳入水中。
"Wait there!" Kathryn rose. "No, on second thought, follow me."
“等等！”凯瑟琳站了起来。“不，转念一想，跟我来吧。”
This murderous lunatic could kill them both without a second thought.
这个杀人狂会毫不犹豫地把他们两人都杀掉。
On second thought I do like to brag 'Cause I'm mighty proud of That Ragged Old Flag."
VOA : special.2010.07.02
But when we thought about the second case, the intuition seems to be, body is the key to personal identity.
但当思考案例二时，得到的直觉似乎是，肉体是个人认同感的关键。
死亡课程节选 : 耶鲁公开课
I thought this would be a good lead in to the second theme of this lecture, which is framing.
我认为这可以为第二个主题,即框架效应，开个好头。
金融市场课程节选 : 耶鲁公开课
She made a second recording of Elvis's songs because she thought the owner of Sun Records should hear him sing.
VOA : special.2010.04.04
And forty percent thought they should get a B, the second highest mark, just because they did most of the reading for class.
VOA : special.2009.03.12
People carelessly jump in and out of social media games without giving them a second thought.
FORBES: Will Zynga's New Hire Exploit Gambling or Consumers?
After a polite round of laughter in the room I barely gave it a second thought.
On second thought, speaking of the soul of beef, roasted marrow is its meaty essence.