名词
中文翻译：令人不安的信号
同义词：
['upsetting signal', 'disturbing message', 'unsettling signal']
例句：
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1. Thesudden drop in stock prices was a disturbing signal for investors.
股价的突然下跌对投资者来说是一个令人不安的信号。
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2.The news of the new policy was a disturbing signal for the company's shareholders.
新政策的新闻对该公司股东来说是令人不安的信号。
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3. The sound of fireworks was a disturbing signal to her neighbors.
烟花的声音让她的邻居感到不安。