begin doing something vigorously
开始起劲地干
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she set to with bleach and scouring pads to render the vases spotless .她开始起劲地用漂白剂和抹布要把那些花瓶擦得一尘不染。
(of a dancer)acknowledge another dancer, typically one's partner, using the steps prescribed
(跳舞者)与舞伴相对而舞。