Graptoloids
正笔石类
🗣️ 情景例句
Is this all Grandpa's stuff?
这里面都是爷爷的东西吗？
Yes, it's not like what the radio said at all.
是的，一点也不像收音机里说的那样。
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。