busy后面加的单词：busy with 忙于；busy in 忙于；busy day 忙碌的一天；busy season 旺季；busy time 繁忙时间；被占时刻；busy as a bee 像蜜蜂一样忙碌，忙得不可开交；busy line 占用线路；忙线路；busy tone 忙音