Dioptra
测量高度及角度用的一种光学装置
🗣️ 情景例句
Tell me the courses you have completed in school and what is your favorite subject?
你曾修读哪些课程和你最喜欢哪一科？
It won't happen again.
下不为例。
What's new?
有什么新鲜事吗？