Cobalamine
[化] 钴胺素
🗣️ 情景例句
We must prepare ourselves to have a hard time.
我们必须准备过艰苦的日子。
Give me the rocket and boat, and I'll give you a sucker.
把那火箭和快艇给我，我就给你棒棒糖。
Why were you shouting?
你为什么大声喊？