a)send something/somebody ↔ outSEND to make a person or a group of people or things go from one place to various other places 发出某物;派出某人
Information was sent out to interested students.
信息发送给了感兴趣的学生。
Search parties were sent out to look for survivors.
派出了搜救队去寻找幸存者。
b)send something ↔ outSEND to broadcast or produce a signal, light, sound etc 广播;发出〔信号、光、声音等〕
The ship is sending out an SOS signal.
那艘船正在发出呼救信号。
c)send out for somethingDFASK FOR something/ASK somebody TO DO something to ask a restaurant or food shop to deliver food to you at home or at work 叫外卖