Chalkface
課堂教學, 教學實踐（與教學理論或備課和批改作業等相對）
??? 情景例句
Sit down, Susan.
坐下， Susan。
He that has a tongue in his head may find his way anywhere.
遇事多問，隨處可行。
All the thing I had packed so carefully were soon in a dreadful mess.
所有細心包裝好的東西一會兒工夫就亂成一團。