So that's where you have to think about whether it's positive or negative.

你就要想想，它是正还是负,你们现在不需要。

麻省理工公开课 - 化学原理课程节选

You know, if you are looking to go into business, learn math really well, learn economics really well.

例如，如果你将来想从商，你现在就要学好数学和经济学。

如果是在考虑留学 - SpeakingMax英语口语达人