If so,why am I risking my life for this mission if we are not there to win it?" But more troops alone will not secure Afghanistan,says retired Staff Sergeant Brian McGough.

VOA: standard.2009.11.16

I'm not working alone here, but we have three teaching fellows who are affiliated with the course, two of which are here today.

我并不是一个人讲授这门课,有三位助教,与我并肩战斗,今天有两位在这里

耶鲁公开课 - 生物医学工程探索课程节选