knockon撞击撞出;敲击(门、窗)knockat敲(门、窗等)knockoff击倒;停工;中断knockdown击倒;拆卸knockatthedoor敲门;把……撞倒;撞墙knockout敲空;击倒;打破;使筋疲力竭knockitoff停止做;住口,别再讲下去了knockonthedoor敲门knockover打翻;撞倒knockin(把钉子)钉入knockonwood敲木头,企求好运;吉人天相knockup敲门唤醒;[英口]筋疲力尽;往上敲knockback(摇把)反击,(活塞)逆行,(曲轴)反转;反座;回击,击退;使...大吃一惊knockagainst撞击,与…冲突;偶然遇见knocksensor爆振传感器;进气流量传感器knockinto撞上;与…相撞knockoffwork敲落工作;歇工