名词
中文翻译：头盔
同义词：
['cap', 'hat', 'visor']
例句：
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1.He wore a cap to keep the sun off his face.
他戴了一顶帽子，以防太阳晒伤他的脸。
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2. The policeman put on his hat and stepped out of the car.
警察戴上帽子，从车里走出来。
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3.She put on her hat and went for a walk in the park.
她戴上帽子，去公园散步。