It means to be skilled at singing and dancing.

就是指非常擅长唱歌和跳舞.

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Candidates for this company are expected be skilled at using a computer.

这家公司要求应聘人员能熟练使用计算机.

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To be a good administrator mainly means to be skilled at solving people's problems.

所谓管理得好,主要是做好人的工作.

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They should be skilled at running, jumping, passing, catching, dribbling, shooting, and blocking.

他们应擅长跑 、 跳 、 传球 、 接球 、 运球 、 射门和堵截防守.

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