Chasma
[医] 呵欠
🗣️ 情景例句
It is. That's why we bought it for you.
是的。这就是我们买给你的原因。
The man is surveying land for a national park.
这个人正在测量国家公园的土地
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。