Sustaining
a. 支持的, 持续的
🗣️ 情景例句
I think you should call Rita Mae right now.
我想你现在就打电话给Rita Mae。
How long have you stayed there?
你在那儿住多久了？
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。