call in 1. 叫…进来(或进去) I waited only two minutes before I was called in. 我只等了两分钟就被叫进去了。 2. 召来，召去 call in a doctor 请医生来 3. 命令收回；要求退回；请求交还 The library is calling in all the books that are overdue. 图书馆正在通知归还所有到期未还的书。 4. 要求付清 call in a debt 要求还清借款 5. 将…从前哨撤回 The battalion outposts were called in. 该营的前哨部队已被召回。 6. 到他人的家(或办公处等)访问 Please call in at five. 请在5点钟时来访。 I'll call in(at) the library to return a book. 我要到图书馆去还一本书。(此句在口语中常省去 at)