Well,I think it's that governments around the Gulf do actually keep a very close watch on their populations and on people coming in and out of their countries.

VOA: standard.2010.08.11

I do watch a lot of American football, as well.

我确实看很多美式足球（比赛）。

美式足球 - SpeakingMax英语口语达人

Well, it also illustrates that one of the things you do after you introduce a vaccine, you can't stop there, you have to continually watch what's happening with this disease in your population.

同时,也告诉我们,将疫苗推向公众后,你不能就此放手,你必须得继续观察,接种过疫苗的人中,该疾病的发病情况

耶鲁公开课 - 生物医学工程探索课程节选