"So if you have hoarseness with tobacco or alcohol use, that would be a significant risk factor for cancer or other problems of the throat that could be serious.

VOA: special.2009.09.02

assert One of the most important things we do is we use assert statements so that we catch problems early.

要学会利用,声明来早点发现问题。

麻省理工公开课 - 计算机科学及编程导论课程节选

Sometimes there were interesting little problems that emerged and one of those has to do with the use of chariots in warfare.

偶尔会有一些有趣的小问题出现,这往往和战争时使用的二轮战车相关

耶鲁公开课 - 古希腊历史简介课程节选

"The problem with that body of research is that it's difficult to interpret because obviously people with existing mental health problems use cigarettes to self-medicate."

VOA: standard.2010.06.15

So that you will come away with a sense of what you can do, what you can't do, and what kinds of things you should use to tackle complex problems.

因此你们才能对,你们能做的事儿，不能做的事儿,和用何方法去,解决棘手问题有一个基本概念。

麻省理工公开课 - 计算机科学及编程导论课程节选

So you build it with a material like silver and gold, and then you encounter the problems of society that your bridge might get stolen because somebody thinks they have a better use for silver and gold than your bridge.

但如果你用金或银这样的材料,你又会面对新的问题,你的桥会被偷走,因为有人认为金和银有比造桥更好的用途

耶鲁公开课 - 生物医学工程探索课程节选