(单词翻译:单击)
听力文本
Researchers believe they have solved one of science's greatest mysteries. They think they have found out why a dog's nose is cold. Scientists from universities in Sweden and Hungary have posited that dogs' noses are constantly cold because they act as "ultra-sensitive heat detectors". Canines can sense the temperature of something before they touch it. They added that dogs use their noses to detect tiny changes in temperature, such as when possible predators or prey are nearby. Humans generally only know something is hot after touching it, often with painful consequences. It was common belief that the only reason dogs' noses are cold is to control and regulate their own body temperature.
The researchers conducted experiments on sixteen dogs that had to detect the temperature of different objects in a room. The objects had different temperatures that humans could only differentiate by touching them. The scientists said that the brain activity in the dogs showed that they could discern which objects were warmer than others. Anna Balint, lead author of the study, said: "Dogs are able to sense the thermal radiation coming from warm bodies or weak thermal radiation, and they can change their behaviour according to this signal." Another scientist said scientists should now re-evaluate how predators hunt. Many may use heat-sensing abilities to track or sense their prey.
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重点解析
1.They think they have found out why a dog's nose is cold.
find out 弄清楚
You can find out whether they are prepared to share the cost of the flowers with you
你可以弄清楚他们是否愿意和你一起分担买花的费用。
2.The scientists said that the brain activity in the dogs showed that they could discern which objects were warmer than others.
discern 觉察出
He discerned a certain coldness in their welcome.
他觉察到他们的欢迎有点冷淡。
参考翻译
研究人相信他们已经解决了科学界最大的谜团之一。他们认为他们已经找到了狗鼻子是凉的原因。来自瑞典和匈牙利大学的科学家们推测，狗狗的鼻子之所以一直处于冰凉状态，是因为它们充当了“超灵敏的热探测器”。狗狗们在接触东西之前就能感觉到它的温度。他们补充称，狗狗们用自己的鼻子探测温度的细微变化，比如当附近可能有捕食者或猎物的时候。人类通常只在接触到热的东西后才知道它是热的，通常会带来痛苦的后果。人们曾普遍认为，狗鼻子是凉的的唯一原因是为了控制和调节自己的体温。
研究人员对16只狗狗进行了实验，让它们在一个房间内探测不同物体的温度。这些物体的温度都不同，而其中的差异，人类只能通过触摸来感知。科学家们表示，狗狗的脑部活动表明，它们能够辨别出哪些物体比其他物体更温暖。该研究的首席作者Anna Balint说到：“狗狗能感觉到来自温暖身体或微弱热辐射的热辐射，并且它们可以根据这一信号改变自己的行为。”另一名科学家表示，科学家们现在应该重新评估食肉动物是如何捕猎的。许多捕猎者可能使用热感测能力来跟踪或感知它们的猎物。
