give sth in
hand over sth to sb who is authorized to receive it 将某事物呈交给某人
Please give your examination papers in (to the teacher) when you´ve finished. 考卷答完後请上交(给老师). give `in (to sb/sth) allow oneself to be defeated or overcome (by sb/sth) (向某人[某事物])屈服, 让步, 投降
The rebels were forced to give in. 叛乱者被迫投降.
She´s a gutsy player, she never gives in. 她是个勇敢的选手, 从不屈服.
The authorities showed no signs of giving in to the kidnapper´s demands. 当局对绑架者的要求丝毫没有让步的迹象.