Norcholanic acid
[化] 降胆烷酸
🧩 词语组成解析
🗣️ 情景例句
She's a really fantastic girl.
她真是个了不起的女孩。
I took 6 boxes of biscuits.
我拿了六盒饼干。
The book is protected by copyright.
该书受版权保护。