first-class

first-class
ˌfirst-ˈclass adjective
1. of very good quality, and much better than other things of the same type:
    This is a first-class wine.
    His writing is first-class.
2. relating to the class of post that is the most expensive and quickest to arrive
    first-class stamp/mail/post etc
3. relating to the best and most expensive class of seats on a plane or train, or rooms in a hotel
    first-class passenger/seat/compartment etc
—first class adverb:
    If I send the letter first class it should arrive tomorrow.
    travel first class

first-classBrE /ˌfɜːst ˈklɑːs/ 🔊NAmE /ˌfɜːrst ˈklæs/ 🔊 adjective [usually before noun] in the best group; of the highest standard 第一流的；一级的；一等的；最优的 SYN 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 [only before noun] (in Britain) 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。🔊🔊