Spermicides
(spermicide 的复数) [医] 杀精子剂
🗣️ 情景例句
What are your greatest strengths?
你最大的优点是什么？
To operate a steam locomotive
驾驶蒸汽机车
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。