Ketohydroxyestratriene
雌酮
🗣️ 情景例句
After studying an hour, I finally got the hang of the lesson.
我学习了一个小时，终于理解了这一课的要点。
Is that lady a student?
那位女士是学生吗？
I have an exhibition in London this coming month.
下个月我在伦敦要举办一次画展。