Corrinoid
[化] 类咕啉
🗣️ 情景例句
We started by making safety equipment for many sports.
我们是以做运动产品的安全器材起家的。
Don't speak all you know, but know all you speak.
不要尽言所知，而要尽知所言。
I don't know his number. Did you write it down?
我不知道他的电话号码。你记下来了吗？