名词
中文翻译：信号
同义词：
['signal', 'signal system']
例句：
-
1. The police officer gave me a SIG to indicate that I was under arrest.
警察给了我一个信号，表示我被逮捕了。
-
2. The SIG on the doorbell buzzer is for emergency calls only.
门铃上的紧急呼叫按钮是用来接紧急电话的。
-
3. The SIG in the room indicated that the meeting had been called to order.
房间里的信号指示会议已经开过会了。