| 释义 |
first classn.（名词）- The first, highest, or best group in a system of classification:一级，甲等，一流：在分类系统中最先的、最高的或最好的：a restaurant of the first class.第一流的餐馆
- The most luxurious and most expensive class of accommodations on a train, passenger ship, airplane, or other conveyance.头等舱：火车、客轮、飞机或其它运载工具中最豪华、最昂贵的住宿等级
- A class of mail including letters, post cards, and packages sealed against inspection.优先投递，第一类：包括信件、明信片和包裹等密封起来免检的一类邮件
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