I must write my letter in time for them to send back a reply.我必须及时写信,以便他们能来得及答复。Malaysia wants to send back refugees classed as economic migrants.马来西亚想遣返那些被归为经济移民的难民。Complete all the details, then send back the form.表格详细填写好再寄回来。Kodak will process films and send back prints.柯达会冲印胶卷,然后将照片寄回。