凭嗅觉追赶的英文：
hunt by scent

hunt是什么意思：
v. 打猎；搜索，搜寻
n. 打猎；搜寻

We often go hunting.
我们常常去打猎。

The chase on a crossbow is for hunting.
驽弓上的箭槽是用来捕猎猎物的。

I'm on the hunt for lodgings.
我正在寻找住所。

The natives live by hunting for their food.
当地人以猎取野兽为食。

He has been hunting for a job.
他一直在找工作。

scent是什么意思：
n. 香味；踪迹；嗅觉；察觉能力；气味；臭迹；香水
v. 嗅出；嗅着气味追赶；觉察，预感到；使具有香味；发出（…的）气味

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。

Smell the delightfully subtle scents.
闻这怡人的淡淡香气。

A dog has keen scent.
狗具有灵敏的嗅觉。

She dabbed herself with scent.
她在身上擦了一点香水。

Is that your usual scent?
那是你常用的香水？