smell可數(shù)嗎？

　　例句：

　　The smell of the sea took him back to his childhood.

　　大海的氣味使他回想起孩提時代。

　　Can you smell something burning?

　　你有沒有聞到什么東西燒焦了？

　　Smell is keener in dogs than in humans.

　　狗的嗅覺比人的嗅覺靈敏。