Conservativeness
高中 Senior High守恒性
🗣️ 情景例句
Before Max wakes up.
趁Max还没有醒来。
This is my friend Susan.
这位是我的朋友苏珊。
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。