名词
中文翻译：帽子
同义词：
['hat', "pilot'scap", 'flight helmet']
例句：
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1. She wore a hat to keepwarm in the cold weather.
她在寒冷的天气里戴了一顶帽子以保持温暖。
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2.The pilot's cap was a symbolof his profession.
飞行员帽是其职业的象征。
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3.He put on his flight helmet before takingoff for the first time.
他第一次起飞前戴上了飞行头盔。