名词
中文翻译：信号
同义词：
['notice', 'indication', 'indicator', 'cue', 'signal', 'sign', 'indication', 'indication', 'indicamento', 'significato', 'significatore']
例句：
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1. The traffic light is signaling for us to wait at the red light.
交通灯正在示意我们等红灯。
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2. He used a pen as a signal to indicate that he was ready to speak.
他用一支笔作为信号，表示他准备发言了。
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3. The policeman gave a hand signal to his colleague to follow him.
警察向他的同事做了一个手势，让他跟着去。