| 例句 |
How much more would it cost to send it first class?选择第一类邮寄要多花多少钱？First class costs more, but it will arrive tomorrow.选择第一类邮寄要贵一些，但是明天就可以到达。How much is a first-class stamp?一张第一类邮票多少钱？Fill in the coupon and send it first class to the address shown.填写本礼券并按所显示的地址用第一类邮件寄出。The American government classifies both asbestos and environmental tobacco smoke as class one carcinogens.美国政府将石棉和环境中的香烟烟雾列为第一类致癌物。 |