Plagionite
斜梳锑铅矿
🗣️ 情景例句
The times have been very bad.
时机一直很坏。
How much does she need?
她需要多少？
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。