第三人称单数： airmails
过去式： airmailed
过去分词： airmailed
现在分词： airmailing

What is the airmail postage on postcards to beijing ?

寄到北京的航空风景明信片邮资要多少？

What is the airmail charge to japan ?

航空邮件到日本需要多少钱？

In the early days of flight , the american government awarded a series of guaranteed contracts for carrying airmail .

在早期的航空运输中，美国政府会把有担保的合同授予运送航空邮件的公司来完成。

Would you like to send it surface or airmail ?

你是想用平邮还是空邮？

For a time , part of the issue was produced on thin airmail paper , which took even longer .

有一段时间，部分报纸要印在薄薄的空邮纸上，那就要花费更长的时间。