Cobaltamine
[化] 钴胺素; 维生素B12
🗣️ 情景例句
because we have a little surprise for you today.
因为今天我们要给各位一项惊喜。
That's more like it!
这才像话嘛！
My parents were visiting relatives, and my grandparents had decided to spend the day at home.
我父母走亲戚去了，祖父母打算那天在家呆着。