空运时效用英语怎么说

空运时效用英语表达为"air freight transit time"。

来源：空运时效是指货物从发货地到收货地所需要经过的时间。

一些英文例句和中文翻译如下：

The air freight transit time for this shipment is three days.
（这批货物的空运时效为三天。）
We need to reduce the air freight transit time in order to meet our customer's delivery deadline.
（我们需要缩短空运时效，以满足客户的交货期限。）
The air freight transit time for this route is generally around five days.
（这条路线的空运时效通常在五天左右。）