Pressuretightness
氣密性
??? 情景例句
What's the nature of the problem?
是什么樣的問題？
Shall we take a break?
我們是否應(yīng)該休息一下？
The conditions of society are such that skills have to be paid for in the same way that goods are paid for at a shop.
社會(huì)上的情況就是如此，技術(shù)是必須付錢去買的，就像在商店里要花錢買商品一樣。