Karstenite
硬石膏
🗣️ 情景例句
May I have her office phone number, please?
可以给我她办公室的电话吗？
I really care for the students in my class.
我真喜欢人班上的学生。
I'd like to know how you reached your conclusions.
我想知道你们是如何得出结论的。