Sker
(SK 的比较级) [医] 链球菌激酶, 链球菌致活酶
🗣️ 情景例句
What do your parents do?
你父母是做什么的？
Sweep before your own door.
先律己，后律人。
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。