Cobamide
钴胺酰胺
🗣️ 情景例句
How about a date with your grandfather?
和你爷爷约个会好吗？
Did you give it to him yourself?
你自己亲自交给他吗？
We'd better catch a bus. I'll go with you.
我们还是搭公共汽车去好。我跟你一块去。