keep one's eye on the ball 隐藏摘要 
警惕
keep one's end up 精神饱满地对付
keep one's eye on the ball 警惕
keep one's eyes on 注视
http://www.zftrans.com/favorite/vocabulary/2006-2/1/212706212127122877397.htm - 基于23个网页
密切关注周围的事情
keep tabs on... 关注...的发展
keep one's eye on the ball 密切关注周围的事情
go to pieces 心烦意乱
http://zhenmafudan.ycool.com/post.2795803.html - 基于2个网页
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