Taking flight turns beagles into eagles, aero dales into " air mail" .

乘坐航班使小猎犬化作“老鹰”，可以随时空中“邮寄”。

Some plants use air mail to warn each other of danger.

一些植物会使用空气信号相互警告危险。

" Air mail envelope, please, " he said.

“请用航空信封， ” 他说。

I'd like to send this by air mail, please.

我想要用航空邮寄这个，麻烦你。