Alpha-emitting isotope
[化] α放射性同位素
🧩 词语组成解析
alpha
['ælfə]
n. 希腊字母的第一个字母;
n. 发射；发出, 散发
🗣️ 情景例句
It really doesn't matter at all.
真的没关系。
I'm not young enough.
我还不够年轻。
that given a planet only approximately like our own, life is almost certain to start.
如果设想有一颗行星和我们地球的情况基本相似，那几乎肯定会产生生命。