The brain also needs a "cognitive rest," they say, by restricting activities like video games, texting and watching TV.

VOA: special.2009.10.28

You have to test it by giving the vaccine to a large population of people, and then watching and seeing if you've reduced the incidence of the disease.

这样的测试的做法只能是,给大量人群分发疫苗,接着观察和了解,这种疾病的发病率是否有所降低

耶鲁公开课 - 生物医学工程探索课程节选

and just, you know, watching the world go by, so.

就这样，欣赏着周围的一切。

科芬园的氛围 - SpeakingMax英语口语达人

He learned to play the harmonica by watching an old man play the instrument.

VOA: special.2010.06.13

Tate first became interested in glass by watching glassblowers as a young child.

VOA: special.2009.09.16

Clara Park of New York City says she first fell in love with "Star Trek" in the late nineteen eighties by watching the "Next Generation" television series.

VOA: special.2009.06.05

Woody learned how to play the guitar by watching his father's brother play.

VOA: special.2010.06.13