动词
中文翻译：Unknown
同义词：
['notify', 'indicate', 'announce', 'signalize', 'mark', 'denote', 'signify']
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 common signal for drivers to follow.
交通灯是司机们常用的指示信号。
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3.The new policy will signal a change in our approach to environmental protection.
新的政策将标志着我们对环境保护方法的改变。