The Twin Towers, on the other hand, were basically " steel tubes."

另一方面，双子塔基本上是“钢管” 。

An electromagnetic force causes the pods to “float” on air inside a series of steel tubes.

电磁力使吊舱在一系列钢管内的空气中“漂浮”。

Its planned system would move people around in steel tubes. Those passengers would be traveling at speeds of up to 1,200 kilometers per hour.

该公司规划的系统将通过管道运送旅客，旅客们将以时速1200公里的速度旅行。

He purchased a huge tract at Conneaut and began building a gigantic plant for the manufacture of steel tubes, a business in which he had not hitherto engaged.

他在 Conneaut 购买了一大片土地， 并开始建造一个巨大的钢管工厂， 这是他迄今为止从未涉足的行业。