Had I of read those comments before we went to eat there I may have thought twice before going.

如果我的阅读这些评论之前，我们去了那里，我吃了两次才可能去思考。

A day or two later, the school shut down for Easter break. Neither the teacher nor her student thought twice about the dollar.

一两天后，学校因复活节放假而停课。老师和她的学生都没有仔细想过那张一美元的事情。

A few readers mentioned how they wish they'd re-considered their choice of college major, or even thought twice before dropping out.

少数读者提到，他们希望重新考虑选择大学专业，或者在退学前甚至再三考虑。

You've probably never thought twice about the Apple "command" key on the lower left portion of your keyboard. But where does that curly square symbol come from?

你可能从来没有想过苹果键盘上命令键的图案到底是什么玩意，你知道它是从哪里来的吗？