After a littleexploration through the thick growth of kelp and sea grass, he picks up apromising-looking rock about the size and shape of a slightly melted bowlingball.

在厚厚的海藻和海草中摸索了一小会儿后，他拾起了一块看起来有潜质的石头，其体积和形状像有点融化的保龄球。

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Giving an imitation of traditional plastic theory , a damage surface model on brittle rock about temperature in stress-space is introduced and the evolutionary law is discussed qualitatively.

参照经典塑性力学的屈服面理论，引入了温度作用下应力空间中脆性岩石的损伤面模型，定性地讨论了荷载和温度影响下损伤面时的演化规律。

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Meanwhile, back at the ranch (or rather, at the farm he'd sold), the new owner had picked up an unusual looking rock about the size of a country egg, and put it on his mantle as a sort of curiosity.

与此同时，在他的农场上(或者说，他卖掉的那个农场)，新的主人捡到一块鸡蛋大小的怪石。出于好奇，他把石头放在壁炉架上。

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He reported about the huge rock formations and said there was no way to reach the valley below.

VOA: special.2009.01.07

I wanted to ask you about the role of your rock and roll band.

我还想问一下，摇滚乐队,在您的生活中扮演着什么角色？

普林斯顿公开课 - 人性课程节选

Why are you so passionate about rock climbing even though it's dangerous?

为什么攀岩那么危险你还喜欢呢？

攀岩的刺激 - SpeakingMax英语口语达人

Executives in Round Rock boast about holding the operating margin almost constant amid a vicious price war.

FORBES: Pulled in a New Direction

The Fastnet Rock is about as rugged as they come.

ECONOMIST: The Fastnet Lighthouse: Light on a lonely rock | The

Gene Pfeifer, a businessman who owns part of the planned site, has protested both about the size of the scheme and the way in which Little Rock has set about obtaining the land.

ECONOMIST: Urban development