动词
中文翻译：表示
同义词：
['notify', 'signal']
例句：
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1.The policeman signaled the driver to stop.
警察示意司机停车。
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2. The traffic light is a signal for the cars to stop.
交通灯是汽车停止的信号。
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3. The company sent a signal that it would not renew the contract.
公司发出了一个信号，表明它不会续签合同。