美国科学60秒 SSS 2012-11-14
时间：2019-01-08 作者：英语课 分类：Scientific American(十一)月
Imagine if you could focus your nose the way you focus your eyes. Scientists now believe that animals with a highly developed sense of smell like rats and dogs, do just that. Similar to the way we taste sweet, salty sour and bitter on different parts of the tongue, animals detect various smells in different parts of the nose. Researchers at the University of Chicago hypothesized that rats by changing the way air flows across the insides of the nostrils 1 could direct the scent 2 that nasal region where could best be tested. Turns out they were right. When presented the different *ders , rats actually change the way they sniffed 4. For example, long slow sniffes. For hard to detect scents 5.Or short fast ones for easy ones. Rats even sniff 3 differently while learning a new scent than when the smell was familiar. The study is in the journal of NeuroScience.
The researchers say the finding shows that there is more to a good sense of smell than originally thought. A sensitive nose is important, but so as how you use it.
- Her nostrils flared with anger. 她气得两个鼻孔都鼓了起来。
- The horse dilated its nostrils. 马张大鼻孔。
- The air was filled with the scent of lilac.空气中弥漫着丁香花的芬芳。
- The flowers give off a heady scent at night.这些花晚上散发出醉人的芳香。
- The police used dogs to sniff out the criminals in their hiding - place.警察使用警犬查出了罪犯的藏身地点。
- When Munchie meets a dog on the beach, they sniff each other for a while.当麦奇在海滩上碰到另一条狗的时候，他们会彼此嗅一会儿。
- When Jenney had stopped crying she sniffed and dried her eyes. 珍妮停止了哭泣，吸了吸鼻子，擦干了眼泪。 来自《简明英汉词典》
- The dog sniffed suspiciously at the stranger. 狗疑惑地嗅着那个陌生人。 来自《简明英汉词典》