Coprostanol
粪（甾）醇
🗣️ 情景例句
Sorry, we don't have any vacancies at the moment.
不好意思，目前我们没有任何的职位空缺。
I'm so sorry.
十分抱歉！
This time it was the postman and he wanted me to sign for a registered letter!
这次是邮递员，他要我签收一封挂号信！