Cholestanons
[建] 胆甾烷酮
🗣️ 情景例句
Do you know anything about South American culture?
你了解南美洲的文化吗？
I meet the boy whose aunt is a librarist.
我遇到那个男孩的姑妈是图书管理员。
Lily, do you have a ruler?
莉莉，你有尺子吗？