Chalkface
课堂教学, 教学实践（与教学理论或备课和批改作业等相对）
🗣️ 情景例句
my mother is running for the school board?
我母亲竞选联合校董会董事吗？
In Arizona, the stars seem very bright.
在亚利桑那州，星星看起来格外明亮。
and if a single curved glass would distort nature, how much more would a pair of them?
何况一片曲面镜就可歪曲自然，那么伽利略的两片曲面镜对自然的歪曲又该多大呢？