droptv.放下；掉下vbl.dropvt.落下；跌倒；下降；放弃；漏掉；断绝关系n.滴；微量；减少；滴状物drop hrammer[机] 落锤dropper hook滴管钩drop someonevt.将某人打倒在地drop syringe点滴注射器drop shuttern.开关(相机快门)drop channel分出信道dropped call通话中断drop end car端卸车dropped beat脱漏搏动dropwise add滴加