When you have a post-office box, postman will not bring letters to you.

当你有了一个邮箱时，邮递员就不会再给你送信来了。

youdao

He produced 1000 leaflets tagged with his phone number and a post office box number.

他做了一千份标有他的电话号码和邮箱号码的传单。

《柯林斯英汉双解大词典》

This distinction is reflected in business rules such as a rule that a shipping address may not be a post office box.

这种区别反映在业务规则中，比如发货地址不可能是一个邮政信箱。

youdao

The other thing I noticed, only after I had read the letter through, was the absence of a post-office box address.

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If you're unsure whether an ad is sincere, you can protect your identity when responding by providing a resume with a post-office box address instead of your home address, says Ms. Dixon.

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The mailman delivers to a post-office box about 10 miles away at the only restaurant-bar in Pioneertown, a tiny dot created by Hollywood in the 1940s as a backdrop for filming westerns.

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