be busy doing sth be busy with be/keebusy doing sth engage in have one's hands full sb be engaged in doing sth work on sth
Related Translations:
忙于: be busy at [about; over; with]; busy oneself with [at; in]; on the wing 短语和例子忙于工作 be busy at work; 蜜蜂忙于采蜜。 the bees busied themselves at making honey. 他正忙于为他的小说收集资料。 he is on the wing gath
