你好！
擅长于
be good at 英[bi: ɡud æt] 美[bi ɡʊd æt]
v. 擅长; 健; 精通; 熟谙;
[例句]You have to be good at spotting trouble on the way and heading it off.
你必须善于发现潜在的麻烦并加以化解。
be good at sth； be good at doing。
be good at speak English
be good at
Be good at Speaking English
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