"There is increased evidence that it helps shorten the duration of the common cold sometimes even by two to three days."

VOA: special.2011.04.20

So, it works, I think it's just getting too much Sometimes it helps to not actually hit the metal, - just put it next to the -- there we go.

所以，它开始工作了，我认为它太多了,有时候它并不是,帮助轰击了金属，仅仅是把它拉近了。

麻省理工公开课 - 化学原理课程节选

Sometimes it helps if you can actually be a tourist in your own city,

有时候，如果把自己当成一名游客，就可能受益匪浅，

如何利用空闲时间 - SpeakingMax英语口语达人

And sometimes, you know, not knowing a word, it helps you learn it better

有时候，不知道一个单词，却能够帮助你更好地学习它，

紧张是学英语的敌人 - SpeakingMax英语口语达人