空运费的英文：
air freight

air是什么意思：
n. 空气；大气；天空；空间；微风；样子；神态；气氛
v. 晾；通风；广播

There was not a breath in the air.
一丝风也没有。

a nip in the air
空气中有一种刺肤的寒冷

To fish in the air
海底捞月

Clean the air intakes regularly for sufficient air flow
定期清理进风口以保证有足够的空气流量

The switch hovered in the air.
鞭子在空中摇晃。

freight是什么意思：
v. 装货于；以货运运输；使充满
n. 货物；货运；运费

express freight trai
特快货运列车

The boat is freighted with coal.
这条船装载煤。

`I will freight it for you.'
“我租您的船到利物浦。”

The freight is included in the account.
运费包括在帐内。

A bill of lading may be either freight prepaid or freight payable at destination.
提单所规定的运费，可以预先支付，或在目的地支付。