1、send in的意思是：递送；呈报；命……进来。2、send in的例句是Meanwhile, you can call in policemen from the Bureau of Public Safety to guard the factory, and send a report to the Bureau of Social Affairs about the trouble.一面请公安局派警察保护工厂，一面呈报社会局。3、send in的读音是英[sendɪn]；美[sendɪn]。