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
When are you going camping again?
你什么时候再去露营？
Lack of knowledge is darker than night.
没有知识比黑夜还要黑。
and maybe that is where the rub is.
问题的症结恐怕就在这里。