chalkboard

名词 chalkboard:

1. sheet of slate; for writing with chalk
   同义词：blackboard

1. The teacher scolded the boy for drawing a funny picture on the chalkboard, but she had a ghost of a smile.
   虽然老师责骂那男孩在黑板上画了可笑的图画，但是她自己也忍不住微笑了一下。

chalk.board

n.（名词）
A smooth, hard panel, usually green or black, for writing on with chalk; a blackboard.
黑板：一种供写粉笔字的通常为绿色或黑色的平滑硬板；黑板