Where's the main post office?

邮政总局在哪儿？

《牛津词典》

It's far from serene in Santa's main post office.

圣诞老爷爷的主邮局一点都不宁静。

youdao

You can subscribe to it at any main post office, I think.

我想你在各大邮局都可以订阅。

youdao

We send letters to the Santa Claus Main Post Office in the Arctic Circle in Lapland, Finland.

FORBES: Last Year For Santa

They can also visit a main post office and ask to see the supplement to the London Gazette.

BBC: Search for ?1m prize-winners

But the main post-office workers' union is strongly opposed to even a partial share sale and has demonstrated in the past its ability to sway public opinion.

ECONOMIST: The Post Office