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
It won't sound like a big deal,
这事听起来没啥严重，
He snatched the purse and the ladder, and ran away.
他抢了手提袋和梯子，逃走了。
I arrived in London at last.
我终于到了伦敦。