scent

n. 气味,香味,痕迹
v. 闻出,循著遗臭追踪,发觉

The police are on the scent of the thieves.

警察发现了小偷的线索。

There is a lavender scent and rosemary scent in the air.

空气中有熏衣草和迷迭香花的味道。