Cobalamine
[化] 钴胺素
🗣️ 情景例句
This is show business.
而今天这个却是演艺事业。
Will you come with me to the doctor's office?
你能跟我一道去看医生吗？
It was stolen twenty years ago when Dan was a boy of fifteen!
这是20年前丹还是一个15岁的孩子时被人偷走的！