Norpregneninolone
炔诺酮
🗣️ 情景例句
Be prepared to discuss details and be ready to answer questions.
应随时准备好讨论细节和回答对方的疑问。
The proof of the pudding is in the eating.
空谈不如实验。（实践出真知）
She is a good-looking girl.
她是一个漂亮女孩。