Disphenoid
复正方楔; 双半面晶形
🗣️ 情景例句
this community can do anything to benefit its citizens,
这个社区可做任何造福居民的事情，
I'm a graduate of Yale University, I have a Doctor of philosophy degree.
我是耶鲁大学的毕业生，我有哲学博士学位。
You've made a good choice.
你的眼力不错。