A twenty-foot steel pyramid is to be hoisted into position on top of the tower.

一座20英尺高的钢制金字塔将被吊到塔顶该放的位置上。

《柯林斯英汉双解大词典》

The ancient-dream was finally realized in 1940 when a Russian engineer piloted a strange looking craft of steel tubing with a rotating fan on top.

这个古老的梦想终于在1940年实现了。当时，一名俄罗斯工程师驾驶了一艘外形奇特、顶部装有旋转风扇的钢管船。

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There are many exciting roller-coasters in the world, Top Thrill Dragster, Steel Dragon 2000, Colossus, Superman the Escape, Incredible Hulk and Son of the Beast to name a few.

世界上有很多令人兴奋的过山车。

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Mine engineers decided to encase just the top part of the shaft with steel tubing to prevent rockfalls and further collapses during the extraction process.

CNN: Rescue drill reaches 33 trapped Chilean miners

The glass and steel cone on top of BBC Broadcasting House in central London stands, according to Mr Moon, "in tribute to all those who have sacrificed their lives so that the rest of us could be informed".

UNESCO: UK National Commission for UNESCO :: Call for a Minute��s Silence for Fallen Journalists on World Press Freedom Day

After so many months in which his primary human contact had been an occasional phone call or brief conversations with an inmate down the tier, shouted through steel doors at the top of their lungs, he found himself unable to carry on a face-to-face conversation.

FORBES: Too much privacy: Solitary confinement in U.S. prisons