| 释义 |
sig.nal EQUIPMENT5sIg7nEln [C]equipment, esp. on the side of a railway or road, often with lights, which tells drivers whether they can go, must stop, or should move more slowly信号灯a railway signal铁路信号灯a traffic signal交通信号灯a road signal道路信号灯A signal box (Am signal tower) is a building from which railway signals can be operated.信号房
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