采用特殊信封，如优先邮件，或通过特别快递寄出。

Mail your letter in a special envelope, like Priority Mail or through special Delivery.

youdao

你要寄航空邮件时，请把这张“航空邮件”的贴纸贴在信封上。

Please paste this "AIR MALL" sticker on the envelope when you send it by airmail.

youdao

除私人邮件外，我已打开所有的信封。

I have opened all the envelopes except the personal mail.

youdao

支票是装在信封里和昨天的邮件一起送来的。

The check came under cover in yesterday's mail.

youdao

每次我看到学校邮件的信封时，就会很紧张。

I always when I see the envelope from school in the mail.

youdao

我经常很紧张，当我看到信封从学校来的邮件，但是幸运的是这次我做得不错。

I always get nervous when I see the envelope from school in the mail, but luckily I did OK this time.

youdao

请将航空邮件的粘贴标签贴到信封的正面。

Please put this airmail sticker on the front of the envelope.

youdao

请将航空邮件的粘贴标签贴到信封的正面。

Please put this airmail sticker on the front of the envelope.

youdao