We went for a long walk around the lake.

我们绕着湖走了很长一段路。

We took a walk around the rim of the lake.

我们在湖的周边散步。

Yes, we can go for a walk around the lake, maybe even a boat trip.

是的, 我们可以绕着湖边散步, 也许还可以在湖上泛舟.