Yes, it is a class, not an interface.

是的，它是一个类，而不是一个接口。

youdao

An interesting observation is that Action is a class and not an interface.

(一个有趣的发现是，Action是类而不是接口)。

youdao

"Information is not organised like that online and there's nowhere where that's all put together, and certainly not on an interface that's so intuitive to explore, " he said.

BBC: Virtual worlds with real purposes

Windows 8 was unveiled to the press as an update, not the wildly new interface that it is.

FORBES: Microsoft's Marketing Malfeasance

We lived in a neighborhood, which was not, like, - we call it now an interface area or the conflict area.

NPR: Orchestrating Goodwill for Northern Ireland