send in
phrasal verbsend somebody in
- to order somebody to go to a place to deal with a difficult situation
派某人去（应付困难局面） - Troops were sent in to restore order.
部队被派去恢复秩序。
- Troops were sent in to restore order.
send something in
- to send something by post to a place where it will be dealt with
寄去（处理） - Have you sent in your application yet?
你把申请书寄去了没有？
- Have you sent in your application yet?