Alpha-activeity
[化] α放射性
🧩 词语组成解析
alpha
['ælfə]
n. 希腊字母的第一个字母;
🗣️ 情景例句
I would like to check-out now.
我现在就想结账离开。
To row a boat
划小舟
Don't touch anything unless your teacher tells you to.
除非老师允许，否则你不要动任何东西。