I've been doing this job for 25 years, and I tell you you're going to stuff it up doing things this way.
我干了这工作已有25年了,告诉你,你这样做事情,会把事情办糟的。
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.
用一个气垫来支撑船体,低压空或软垫,软垫周围用高压空气环绕。