名詞 airmail:

1. letters and packages that are transported by aircraft
2. a system of conveying mail by aircraft
   同義詞：airpost

動詞 airmail:

1. send or transport by airmail

1. Cargo ex pacification extremely inferior now under survey we reserve right of claim airmail sealed sample
   聯(lián)合太平洋號上的貨物質量極差，現(xiàn)正在檢驗之中。我們保留索賠的權力，今以航空寄上密封樣本。
2. How much is the postage for an airmail letter to Canada?
   寄往加拿大的航空信要多少郵費？
3. An airmail letter to china normally cost50 cents, but this letter seem a bit thick.
   寄往中國的航空信一般是50美分，不過這封信好像厚一點。
4. Surface mail takes longer than airmail.
   普通郵件比航空郵件慢。