They have embraced the shipping container (which comes in a choice of 20-foot or 40-foot models) as the basic building block in the construction boom accompanying their search for independence.
伴随着公民复决投票的进行， 他们将集装箱（可以选择20英尺或40英尺的）作为基本的建设模块。
2
The change in air pressure associated with a sonic boom is only a few pounds per square foot — about the same pressure change experienced riding an elevator down two or three floors.
和音爆有关的气压变化只有每平方英尺几磅——大约是坐电梯向下两到三层所感受到的气压变化。
3
Nifty Lift added a 4x4 version of its popular SP34, 34-footboom, and introduced a 52-foot model to its line - the SP53 4x4 - last summer.