1. The bush acted as a cushion to my fall.
    灌木在我摔下时起了缓冲作用。

2. Riding on its air cushion over a single rail, which it never touches, at speeds up to 300 m.p.h.
    靠气垫在单轨上行驶而不接触轨道，时速可达每小时300英里。

3. His answer was to lift the vessel out of the water by making it ride on a cushion of air, no more than one or two feet thick. This is done by a great number of ring-shaped air jets on the bottom of the craft.
    他的解决办法是把船体提离水面，让船在一个气垫上行驶，气垫只有一两英尺厚。船底装上大量环状喷气嘴以实现这一目的。

4. It was the idea of supporting a craft on a ´pad´, or cushion, of low-pressure air, ringed with a curtain of higher pressure air.
    他的设想是：用一个低压空气或软垫来支撑船体，软垫周围用高压空气环绕。