Cobalt 60
n. 钴的放射性同位素, 钴60
🧩 词语组成解析
n. 钴, 钴类颜料\\n[化] 钴Co
sixty
🗣️ 情景例句
Grandpa, can you come?
爷爷， 你能去吗？
He studied quite a lot.
他非常用功。
Not only are the means of arriving at the holiday paradise entirely within one's own command and keeping,
完全在自己掌握之中的私人汽车不仅是到达假日天堂的工具，