名词
中文翻译：信号
同义词：
['sign', 'indicator', 'indication例句：1. The traffic light is a common signal for crossing the street.（交通灯是过马路的常见信号。）']
例句：
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1. The traffic light is a common signal for crossing the street.
交通灯是过马路的常见信号。
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2. The new policy is a clear signal of the government's intentions.
新政策是政府意图的明确信号。
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3. The sudden drop in stock prices was a strong signal that the company was facing financial difficulties.
股票价格的突然下跌是公司面临财务困难的强烈信号。