人和货物通过喷气式飞机和快船来流动，而信息是通过互联网以光的速度传送。
Today people and goods travel by jet aircraft and fast ships, and information is transmitted at the speed of light over the Internet.
从理论上讲，这种喷气引擎可以将飞机速度推进到7马赫甚至更快，使飞机能在数小时内完成环球飞行。
In theory, the airbreathing engine could propel an airplane to speeds of Mach 7 or faster, enabling aroundtheworld flights that would take several hours.
海啸以每小时约550英里的速度穿越太平洋，相当于一架喷气式飞机的速度。
The tsunami traveled across the Pacific at about 550 miles per hour, or the speed of a jet plane.
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