Cobaltamine
[化] 钴胺素; 维生素B12
🗣️ 情景例句
Stay right where you are.
站住别动！
He most lives who lives most for others.
活著对别人贡献最多的人，活得最有意义。
Oh dear! You're right.It's closed.
哎吆！你说得对，是关着的。