What's the air mail rate?

航空邮资多少？

youdao

.. In 1799, it would cost so much to mail a letter-- I don't know exactly, something like $10 or $20 to mail a letter at today's rate-- and it would take a long time get there.

在1799年，寄封信需要花费-,我也不清楚具体的数字,大概相当于现在的10到20块钱-,而且还要花很久才能送达。

耶鲁公开课 - 金融市场课程节选

Over half rate e-mail as essential to their work and most agree that e-mail is effective for both the simplest of tasks and for more complicated projects.

BBC: US workers spared junk e-mails

With it users have been able to close more business deals and increase the response rate to e-mail.

FORBES: My Software Isn't Creepy

If you often receive these 0% interest rate offers in the mail, collect those offers for a while.

FORBES: How to Negotiate With Your Credit Card Company