Today,it is happening every few months. The replacements are increasingly young and inexperienced.

VOA: standard.2010.05.20

over the next few months, you are going to be experiencing every single kind of emotion to the extreme and that's fine.

在接下来的几个月里，你们将体会至每一种情绪,极至的情绪，那没关系。

哈佛公开课 - 幸福课课程节选

"We do it as a team now, where a few months ago we didn't do it along with our Afghan partners, now,every day, we are all together in the same venues and we pass information.

VOA: standard.2009.12.03