词典释义：
释义
(of a state or condition)start to arrive or happen
（状态，情况）开始；来到；发生
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she felt a mild case of the sniffles coming on 她开始感到有点轻微的鼻塞[with infinitive]
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it was coming on to rain .开始下雨了。
) meet or find by chance
偶然遇见（或发现）。
[in imperative]said when encouraging someone to do something or to hurry up or when one feels that someone is wrong or foolish
来吧；快点，赶快；得啦（用于鼓励、催促某人、觉得某人错了或犯傻）
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Come on! We must hurry! 快来！我们得赶紧了！
said or shouted to express support, for example for a sports team
加油（表示支持，如运动队）。
