In fifty years there'll be twenty people per square yard, it is written here.
这里写着,再过五十年每平方码将要住着20人的人口密度。
Travelling at a height of 30,000 feet, far above the clouds, and at over 500 miles an hour is an exhilarating experience.
腾云驾雾,在30,000 英尺高空以500英里的时速旅行,这种经历令人心旷神怡。