动词
中文翻译：信号
同义词：
['notify', 'indicate', 'emit例句：1. The traffic policeman signaled for me to stop at the red light.（交通警察示意我停车过红灯。）']
例句：
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1. The traffic policeman signaled for me to stop at the red light.
交通警察示意我停车过红灯。
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2.The pilot signaled the plane to land.
飞行员示意飞机降落。
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3.The firefighters used smoke signals to guide the rescuers.
消防员使用烟雾信号引导救援人员。