只有公共的接口才能成为“官方”的合约，也就是只有公共接口才能被用户访问。

Only the public interfaces are part of the official contract, so only the public interfaces are visible to users.

youdao

亚历山德拉的第一次公开展览是在洛杉矶一家公共图书馆举行的，当时她只有8岁。

Alexandra's first public show was held at a Los Angeles public library when she was only eight years old.

youdao

小小县城只有一家公共浴池，因此天天爆满。

There was only one public bathroom in the small county town and it was always packed with people.

《新英汉大辞典》

And you'd also have baths; that is, public places, sometimes where only men could go, or sometimes women could go, or sometimes they would be mixed in some places.

还有浴室;,这是公共场所，有时只有男子能去，有时女子能去，有时可以男女共用。

耶鲁公开课 - 新约课程节选