名词
中文翻译：白信号
同义词：
['white light', 'white light signal例句：1. The policemen used a white signal to warn the drivers of oncoming traffic.（警察使用白信号来警告迎面而来的司机。）2. The pilot saw the white signal and immediately turned back.（飞行员看到白信号后立即掉头。）']
例句：
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1. The policemen used a white signal to warn the drivers of oncoming traffic.
警察使用白信号来警告迎面而来的司机。
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2. The pilot saw the white signal and immediately turned back.
飞行员看到白信号后立即掉头。
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3. The white signal was so bright that it could be seen from a distance.
白信号非常明亮，可以从远处看到。