As you can see, this is a very simple piece of HTML; it is just a shell.

可以看出，这是一段非常简单的HTML；它只是一个shell。

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The developed materials through the sand slurry abrasion test have been successfully put into practice in the shell of dredging pump and the cutter piece.

研究证明，该试验机能模拟疏浚工况，已成功应用在挖泥船泥泵壳和绞刀片耐磨材料的磨损试验上。

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The seal ring shell has a front piece and a back piece secured together.

密封环壳体具有紧固在一起的前件和后件。

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And he gave a very good analogy in saying, "It was almost as incredible as if you'd fired a 15 inch shell at a piece of tissue paper, and it came back and hit you."

他还打过一个很好的比方：,“这就像是,你用个15英寸果壳,打到面巾纸上被弹回来打到你，一样不可思议，“

麻省理工公开课 - 化学原理课程节选

Getting Mars back online early was a triumph for Shell--and a rare piece of good news for the world's third-largest oil and gas company.

FORBES: Shell Shocked