Radioactive purity
[化] 放射性纯度
🧩 词语组成解析
🗣️ 情景例句
so she'll think of me when she looks at the time.
这样当她看的时候就会想起我。
Today, they will introduce to you our newly built plant and research center.
今天，他们将会向您介绍我们新落成的工厂和研究中心。
Yes, I think they'll return next month.
是的，我想他们下个月回来。