Perlimycin
珠霉素
🗣️ 情景例句
Did you know I can type almost 60 words per minuter?
你知道吗，我能每分钟打60个字。
At noon I had lunch with a friend of mine.
在中午我与一个朋友一起吃了午餐。
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。