Above the glass of water. And the air's inert to the water.
放在水上,空气对于水是惰性的。
Moreover it is chemically inert to most acids and alkalis.
此外,它是一种惰性气体,对大多数酸和碱。
It is also inert to most chemical agents and neutral to pipe metals.
对大部分化学原料惰性与无化学反应且对金属中性反应。
So they have to be engineered to be inert so that they can be safely inside a system and there's not every material you could pick would have that property.
缝合线必须是惰性的,以便确保植入人体后的安全性,不是随便哪个材料都能做到这一点
Engineers who are developing new materials, materials that can be, if you think about it, there's not very many things that you would want to put in your eye and you'll feel comportable to put in your eye so this is a very safe, a very inert material.
工程师们不断研制新的材料,这些材料应该是,想想吧,能让你们敢于,放到眼睛里的,并令人感到舒适的材料并不多,这应该是一种非常安全非常稳定的材料
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