单词	线路吊牌信号
释义	线路吊牌信号 line drop signal
随便看	have something back have something coming out of one's ears have something coming out of your ears have something done have something down cold have something down pat have something down to a science have something going for one have something going with sb have something in have something in common have something in commonwith somebody have something in commonwith something have something in contemplation have something in derision have something in mind have something in remembrance have something in reverence have something in the wind have something in your pocket have something left have something of have something off have something off pat have something on