名词
中文翻译：第二等舱
同义词：
['second-class', 'second-tier', 'second-class passenger例句：1. The train has a second-class compartment for the lower classes.（火车有一个二等舱，供下层乘客使用。）']
例句：
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1. The train has a second-class compartment for the lower classes.
火车有一个二等舱，供下层乘客使用。
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2.She booked a second-class ticket to travel from Beijing to Shanghai.
她预订了一张二等舱的票，从北京到上海旅行。
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3. In the old days, second-class passengers were not allowed to sit in first-class seats.
在旧时代，二等乘客不允许坐在一等车厢里。