名词中文翻译
中文翻译：双层火车车门
同义词：
['双层车厢门例句：1. The box car door was securely fastened to the train.（这辆双层火车的门被安全地固定在了火车上。）2. The driver had to open the box car door to let the passengers out.（司机不得不打开双层火车的门，让乘客下车。）3. The box car door was a popular feature on many early trains.（双层火车的门是许多早期火车的流行特征。）']
例句：
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1. The box car door was securely fastened to the train.
这辆双层火车的门被安全地固定在了火车上。
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2. The driver had to open the box car door to let the passengers out.
司机不得不打开双层火车的门，让乘客下车。
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3. The box car door was a popular feature on many early trains.
双层火车的门是许多早期火车的流行特征。