Cobaltamine
[化] 钴胺素; 维生素B12
🗣️ 情景例句
We couldn't afford it.
我们当时不够钱。
Where were you born?
你出生在什么地方？
Morning, Mr. Wu! I see you're on foot today.
早上好，吴先生！今天我看见您走路来的。