You should think twice about employing someone you've never met.

雇用素不相识的人应三思而行。

《牛津词典》

That will make him think twice!

那会让他三思而行！

youdao

Next time, before you throw, think twice!

下次，在你扔之前，三思！

youdao

Wafaa from Egypt says his favorite proverb is, "Think twice,act wise."

VOA: special.2009.03.01

And in fact, one of the lessons you may already be realizing with P sets is that things seem to take twice, three times, four times longer than you actually might think.

从习题集中你可能已经得出的一个教训就是,程序所花的实际时间往往是你开始以为的两倍，三倍，四倍甚至更长。

哈佛公开课 - 计算机科学课程节选

Yeah, I get homesick at least twice a quarter, I think.

想，我每个季度至少想家两次。

想吃中餐的时候 - SpeakingMax英语口语达人

There's more news now that might make women think twice about hormone replacement therapy.

NPR: Breast-Cancer Drop Attributed to Less Hormone Therapy

This article originally appeared on www.fivecentnickel.com: Think Twice Before Rolling Over Your 401(k).

FORBES: Think Twice Before Rolling Over Your 401(k)

"Maybe not 100 storeys, maybe people will think twice about going over 50, " says Marco Goldschmeid.

CNN: Attack could alter future skylines