I stumbled over a rock.

我在石头上绊了一下。

《牛津词典》

I got beaned by a rock someone threw.

我的头被人扔出的石头砸中了。

《牛津词典》

When I'd missed a few times, he suggested I rest the rifle on a rock to steady it.

由于我几次都没打中，他就建议我把步枪放到石头上来保持稳定。

《柯林斯英汉双解大词典》

I sat there as surprised as if he had thrown a rock in my face!

VOA: special.2009.02.14

This may sound a little bit too much, but I'm no different than that animal, than that tree, than that rock.

这也许一下子很难接受，但我与各种动物没有不同，也与树木，岩石无异。

普林斯顿公开课 - 人性课程节选

Yeah, I got into rock climbing back in university, and I've been doing it ever since,

是，我上大学的时候开始攀岩，以后一直都攀，

拍照的理由 - SpeakingMax英语口语达人

As a 46-year old male of the species with a dwindling amount of hair on my head, the opportunity to get a haircut that makes me feel like I rock is quite enticing I must say.

FORBES: Supercuts Rocks Out Their New Campaign

And I saw something else: I saw rock and roll future and its name is Bruce Springsteen.

NEWYORKER: We Are Alive

"Physically, it's obvious that I hit rock bottom, " said the 22-year-old, who will make her comeback in the Sydney International from 10-16 January.

BBC: SPORT | Tennis | Henin-Hardenne beaten on comeback