There would be one machine, one bulldozer for the entire area.

整个地区将会有一台机器，一台推土机。

You remember Martin Anderson wrote a book on the federal bulldozer describing the effect of the urban development?

你记得马丁·安德森（Martin Anderson）在那本关于联邦推土机的书中，如何描述城市发展效应的吗？

Someone used a bulldozer and plowed a two-foot-deep gash in the desert, unearthing the brick and bitumen remains of a stairway.

有人用推土机在沙漠里犁了一个两英尺深的瓦斯，挖出了楼梯的砖头和沥青残骸。