Radioactive purity
[化] 放射性纯度
🧩 词语组成解析
🗣️ 情景例句
Yes, let me try. Oh, it's difficult. Will you show me how to do it?
好吧，让我试试吧！哦，真不容易。能教我怎么用吗？
He that runs fastest gets the ring.
捷足先登。
Really? If you are ill, you must see the doctor.
真的吗？如果是生病了，你得去看医生。