Roquesite
n. [矿]硫銦铜矿
🗣️ 情景例句
Let's what?
你说什么？
The demand for our products has kept rising.
要求定购我们产品的人越来越多。
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。