first-class

adjective

/ˌfɜːst ˈklɑːs/

/ˌfɜːrst ˈklæs/

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[usually before noun] in the best group; of the highest standard第一流的；一级的；一等的；最优的 synonym excellent
- a first-class novel最佳小说
- a first-class writer一流作家
- The car was in first-class condition.当时车子处于最佳状态。
- I know a place where the food is first-class.我知道有一个品尝一流美食的地方。
[only before noun] connected with the best and most expensive way of travelling on a train, plane or ship（座位、车厢、舱位）头等的
- first-class rail travel乘头等车厢旅行
- a first-class cabin/seat/ticket头等舱／座位／票
Topics Transport by airb1
[only before noun] (in the UK) connected with letters, packages, etc. that are delivered most quickly, or that cost more to send第一类的（英国邮件等级，投递最快）
- first-class mail/post/postage/stamps第一类邮件／邮资／邮票
[only before noun] used to describe a university degree of the highest class from a British university一级优等的（英国大学学位）
- She was awarded a first-class degree in English.她获得一级优等英语学位。