Some animals communicate by smell.
有些动物靠嗅觉交流。
In one well-known test, women and men were able to distinguish by smell alone clothing worn by their marriage partners from similar clothing worn by other people.
"在一项著名的实验中，女人和男人都可以只靠气味就将他们的配偶穿过的衣服与别人穿过的相似的衣服区分出来。
Mice were trained to identify feces from bird-flu-infected ducks by smell.
老鼠经过训练后能通过气味识别出感染禽流感的鸭子的粪便。
Many animals mark territory by smell, including domestic cats and their wild Cousins.
许多动物就是用气味画地为牢的，这其中包括家猫和野猫。
These trace gases are not detectable by smell in any but the most heavily polluted atmosphere.
这些微量气体除了在污染最严重的大气外，是不能凭嗅觉察觉到的。
Fortunately, then, evolution has equipped mammals with the ability to detect by smell chemicals whose concentrations vary with differences in the MHC of the producer.
幸运的是，生物进化赋予哺乳动物通过嗅觉对MHC进行分辨的能力，因为MHC的不同导致了化学物质浓度的差异，而这时可以被嗅觉探测到的。
Hounds, which are driven by smell, aren't as interested in visuals, but herding breeds, such as terriers, may be more stimulated by moving objects they see on the small screen.
像猎犬那样嗅觉灵敏的狗狗，在视觉上的兴趣不会很大；但是像梗犬那样的牧羊犬，就更容易受到电视上运动物体的刺激。
Several hypotheses have been put forward as to why they do it, including that it may somehow help maintain body temperature or allow other monkeys to better identify an individual by smell.
至于它们为什么这么做，科学家提出过一些假设，包括可能是出于某种原因帮助维持体温，或者是为了让其他猴子通过气味更易识别出自己。
But these new neurons helped to form long-term memories and bonds, as the mouse fathers easily recognized their offspring by smell even after they had been separated for a long period of time.
但这些新的神经细胞帮助形成长效记忆和纽带，因为老鼠爸爸可以很容易地通过气味认出它们的子女，即使它们已经分离了很长一段时间。
The collection tanker will then deliver the milk to the dairy where the contents are sampled on receipt, inspected by smell and taste and tested for bacteriological and compositional quality.
运槽车再把合格乳送到乳品厂，在接收处，牛乳被取样并进行嗅觉、味觉鉴定和细菌及成分质量检验。
By burning tree branches, pine needles, and pine cones, many not only warm their houses but improve the smell therein.
通过燃烧树枝、松针和松果，许多人不仅给屋子供暖，而且还改善里面的气味。
By contrast, the same student used a brush to make a breath-taking landscape painting—so vivid that one could almost smell the refreshing rivers and hear the chirping birds.
与此形成对比的是，同一个学生用画笔画了一幅令人惊叹的风景画——如此逼真，几乎可以闻到沁人心脾的河水，听到鸟儿的啁啾。
Indeed, in very few known cases, parent birds sometimes abandoned their nests from something touching their young, just because they noticed it by sight, not smell.
事实上，在一些已知的案例中，母鸟有时会因为孩子被碰触而弃巢，仅仅因为它们是通过视觉而不是嗅觉发现的。
Sometimes these incidents lead to violence, but mostly saboteurs interfere with the hunt by misleading riders and disturbing the trail of the fox's smell, which the dogs follow.
有时，这些事件会导致暴力行为，但多数阻拦者会误导车手、干扰狐狸气味的踪迹来防止狗的追踪，以此来妨碍狩猎。
I've just come across the smell of it, and it's close by here, really quite close.
我刚刚闻到了它的味道，它就在附近，非常近。
Smell has been the most poorly understood of our senses, and only recently has neuroscience, led by Yale University's Gordon Shepherd, begun to shed light on its workings.
嗅觉一直是我们的感官中受到了解最少的，直到最近，耶鲁大学的戈登·谢泼德领导的神经科学研究才开始揭示它是如何发挥作用的。
As days passed, and the children started to complain because of the unpleasant smell let by the rotten potatoes.
几天过去了，孩子们开始抱怨，因为腐烂的土豆散发出难闻的气味。
They can find missing people by using their fantastic sense of smell.
它们可以用它们神奇的嗅觉找到失踪的人。
The teacher stepped off the platform, passed by each of the students and said, "Smell again to see if the smell of the apple is still in the air."
老师走下讲台，从每个学生身边走过，对他们说：“再闻一闻，看看空气中是否还有苹果的味道。”
In the aisle by the laundry section he suggests introducing the smell of freshly laundered sheets.
在洗衣房里，他就建议商家在走道释放一些刚洗好的床单的清香气味。
Although radiation cannot be detected by the senses(sight, smell, etc.), it is easily detected by scientistswith sophisticated instruments that can detect even the smallest levels ofradiation.
尽管射线不能被感官（像视觉、嗅觉）所检测到 ，但是可以被科学家用智能仪器检测到，甚至是很微小的的量。
She said some people are put off by the smell and her friends don't understand why she drinks it.
她说有些人对它的味道却步，她的朋友也不理解她为什么要喝康普茶。
The Times-Picayune reports that the city has been overwhelmed by a "pungent smell" and that, though they can't confirm the odor's source, officials believe the spill is the most likely culprit.
五分币时报报道说整个城市都弥漫着一股“刺激性气味”。虽然不能确定气味的来源，官方相信罪魁祸首就是泄漏的石油。
You're hit by a fishy smell when you walk in, and you quickly see why: Jacuzzi-sized tanks, filled with tilapia.
你一跨入实验室就会闻到浓烈的鱼腥味，你肯定会快速环顾四周：噢！浴缸大小的鱼缸里，满是罗非鱼。
The seaside’s “bracing” smell is caused by a chemical produced by coastal bacteria, present in very low concentrations.
答：并不完全如此。 海风的气味让人振奋是缘于一种沿海细菌的化学产物，尽管它在空气中比例甚微。
As in dreams, the fewest elements are supplied by the senses of smell and taste.
在梦中，极少出现嗅觉及听觉这两个元素。
One study found that when mice were exposed to it, those who were stressed (by the smell of a predator) developed tumors at week 8, compared with week 21 in unstressed mice.
一项研究发现如果将老鼠暴露在紫外线下，那些(因为闻到捕食者气味而)承受压力的老鼠8周后产生肿瘤，相比之下，没有压力的老鼠第21周才出现类似情况。
One study found that when mice were exposed to it, those who were stressed (by the smell of a predator) developed tumors at week 8, compared with week 21 in unstressed mice.
一项研究发现如果将老鼠暴露在紫外线下，那些(因为闻到捕食者气味而)承受压力的老鼠8周后产生肿瘤，相比之下，没有压力的老鼠第21周才出现类似情况。
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