发布于:2025-07-06 06:13浏览量:148文/优校网
1.一级;甲等
2.一类邮件
1.乘头等舱
2.头等的
1.the best and most expensive seats on an airplane or train, or the best and most expensive accommodationplace to sleep on a ship
2.the class of mail that is used for sending letters
1.using the most expensive form of transportation or mail
1.relating to the best and most expensive seats on an airplane or a train, or the best and most expensive accommodation on a ship
2.relating to the class of mail that is used for sending letters
3.of the best quality or the highest standard