邮资

You'll have to pay excess postal charges on this letter.

这封你必须付超重资。

All letters must be stamped with the correct postage.

任何件都应该按所需资。

An aerogramme is writing paper, envelope, and postage all-in-one.You can get aerogrammes at any post office.

就是纸、封和资全在一的件，你可以在任何一个局买到。

Price $14.90, postage included.

价格14.90美元，资包括在内。