chalk是不可數名詞。
Lady : and i want a large box of chalk , too .女士:我還要一大盒粉筆。
Under the coat of chalk i recognized him .透過這層白粉,我還是認出了他。
I guess i'll have to chalk it up to experience .我想我必須記住這個教訓。
That's not the whole of the story, by the chalk .那還遠遠不是故事的全部。