Radioactive vitamine b12
[化] 放射性维生素B12
🧩 词语组成解析
n. 维生素, 维他命
🗣️ 情景例句
I know what you mean.
我懂得你的意思。
Your shoe lace is loose.
你的鞋带松了。
She was not especially pretty. But she was extremely bright.
她不是特别漂亮，但她极聪明。