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My dog is in the garden. He is wagging his tail, his mouth is open and he is looking at me. What is he trying to tell me? Jane Roberts reports.
我的狗在花园里。他正在摇尾巴，张着嘴看着我。他想告诉我什么？简·罗伯茨报告。
People have always been interested in animal communication and scientists have done a lot of research on this subject.
人们一直对动物如何交流感兴趣，科学家们已就这一课题做了许多研究。
Most animals communicate by smell. Dogs are famous for this. When a dog walks outside, it learns about other dogs by smelling things. Dogs have helped the police for a long time, too. They can find missing people by using their fantastic sense of smell. Mice have an excellent sense of smell, too. Scientists have even trained them to find landmines. Scientists have discovered that even ants use smell. They use smell to tell other ants where the food is.
大部分动物通过嗅觉交流。狗在这一点上尤为显著。一条狗在外面走的时候，它通过闻东西来辨别其他的狗。狗也帮助警察很长时间了。它们能通过它们极为敏锐的嗅觉来寻找走丢的人。老鼠的嗅觉也很灵敏。科学家们甚至训练了老鼠来找地雷。科学家发现甚至蚂蚁都是用嗅觉。它们利用嗅觉来告诉其他蚂蚁食物在哪里。
Everyone has heard birds singing. Research has shown that many other animals use sound to communicate. Frogs and insects communicate with sounds. Usually the "gentlemen" make sounds to invite the "ladies".
大家都听过鸟儿唱歌。研究显示有很多其他的动物利用声音来交流。青蛙和昆虫用声音交流。通常雄性发出声音来邀请雌性。
Whales and elephants also use sound to communicate. These sounds can travel very far through water or the ground. However, it is not possible for humans to hear some of the sounds. They are either too low or too high for us.
鲸鱼和大象也用声音交流。这些声音能通过水或土地传非常远。但是，人类要听到这些声音是不可能的。这些声音对我们来说不是太低就是太高。
Animals have always used body language to communicate as well. When a cat puts its ears back, it is a bit mad. When it sits with its tail around itself, it is happy. When a dog puts its tail under its body, it is scared. When it wags its tail and opens its mouth, it is happy. So I think my dog is happy right now.
动物也总是使用肢体语言来交流。当猫把耳朵竖起来的时候，它就有一点生气了。当它把尾巴绕着自己坐着的时候，它就很开心。当狗把尾巴放到身体下面的时候，它就很害怕。当它摇尾巴张大嘴的时候，它就很开心。所以我认为我的狗现在很开心。
