名词
中文翻译：雾信号
同义词：
['fogging signal', 'fog warning', 'fog indication']
例句：
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1. The fog-signal was a clear indication that the weather was going to be bad.
雾信号是一个明确的天气将会变得糟糕的迹象。
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2.The fog-signal helped us to avoid getting lost in the dark.
雾信号帮助我们在黑暗中避免迷路。
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3. The fog-signal was so strong that it blocked all visibility.
雾信号非常强烈，以至于它阻挡了所有的视线。