the faculty of smell

They also exhibit cognitive impairments in memory, problem solving and judgment and deficiencies in their sense of smell compared with age-matched children from a cleaner city 120 kilometers away.

他们也显示出记忆、解决问题和判断方面的认知障碍，且与120公里外较清洁城市的同龄儿童相比，他们还有嗅觉缺陷。

Not all fish move water in and out through these nares in quite the same ways, but key to a strong sense of smell for fish is the ability to move water rapidly over these sensory pads.

鱼并不都是以相同的方式让水在自己的鼻孔中进出的，但嗅觉敏锐与否的关键在于鱼是不是有能力让水快速通过自己的嗅觉感受器官。

Long-snouted rodents depend far more than humans do on the sense of smell and have evolved a much bigger and more efficient system linking the outside environment to the brain.

长鼻子的啮齿动物对嗅觉的依赖性要比人类大得多，而且进化出更强大高效的系统连接外界与自身脑部。

A new study suggests that human preferences have dramatically altered the structure and position of the brain in certain dog breeds, potentially modifying their sense of smell and behavior as well.

一个新的研究表明，人类的偏好已经大大改变了结构和品种的狗的立场某些脑，有可能改变他们的行为和嗅觉的表现不错。

With the odorant genes in hand, Dr. Bargmann could apply genetics to figuring out how the worm's sense of smell worked.

有气味基因在手，巴格曼博士就能把遗传学应用到蛔虫嗅觉是怎样运作的问题上。

Of course, their sense of smell also tells them when food or enemies are near.

理所当然，当附近有食物或敌人时，狼的嗅觉就会通知它们。

Wolves have a very good sense of smell about 100 times greater than humans. They use this sense for communication in a variety of ways.

狼具有一种比人类敏感100倍的嗅觉，利用嗅觉通过各种各样的方式交流，并且用尿液标注它们的领地——气味标记。

For example, it can impair orientation and sense of smell in young clownfish, making them more vulnerable to predators.

例如，它能削弱幼年小丑鱼的方向感和嗅觉，让它们更容易受到捕食者的攻击。

Smell is provocative and deeply connected to our emotional state, and people who lose their sense of smell can even lose their will to live.

气味会刺激我们的神经，影响我们的情绪状态。有时嗅觉失敏甚至会让一些人觉得生不如死。

Dung beetles have a keen sense of smell that allows them to hone in on their favorite food and use specialized mouth parts to draw out moisture and nutrients from the waste.

蜣螂具有敏锐的嗅觉，能够不断的磨自己最喜爱的食物。 它们使用专有的口器来吸取食草动物排泄物中的水分和营养。

Not only is this the first evidence for a sense of smell in bacteria, the results also might represent one of the earliest forms of olfaction in evolutionary history.

这不仅是首次提出细菌能够识别气味，同时这项结果表明在进化史上最早期的一种嗅觉形式。