Echolocation
[医] 回声测定
🗣️ 情景例句
You know I'm very excited about his arrival.
知道我对他的到来是多么兴奋。
Guess! I hope you'll like it.
猜猜看！我想你会中意的。
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。