This letter is too important to send by mail.

这封信太重要了，不能用邮递方式送去。

youdao

A loaf of bread, a terrestrial globe, a plastic skeleton and a hamburger. Is there anything you can't send by mail?

一块面包，一个地球仪，一个塑料骨架和一个汉堡包，还有什么邮局不能寄送的东西么？

youdao

For example, it would be possible for you to send by mail train your Sunday lunch leftovers for your friend to eat for his Sunday lunch.

比如，对你来说你可以用邮政列车把你周日午餐的剩饭菜寄给你的朋友做为他周日的午餐。

youdao

After all, we have books already and can send them by mail.

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Ask, especially in the wake of disaster, for written information and send a check by mail or via website rather than divulge credit card information to an unknown on the phone.

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Send it by snail mail.

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