| 释义 |
| | | | NOUN | | | | | 1 | the best and most expensive seats on a plane or train , or the best and most expensive accommodation (= place to sleep) on a ship （火车的）头等座位；（飞机或轮船的）头等舱 | | He’ s sitting in first class. 他坐在头等舱。 | | | | 2 | the class of post that is more expensive and quicker （费用较高、优先投递的）第一类邮件 | | |