Dog"s bark maybe tells something to people or other animals, and may be a friendly way to say Hi, Sometimes dogs" bark seems to tell their owners that they have seen some strange people. They will show their teeth when they are sad. They will wag their tails when they are happy.
In one word, they can do all kinds of things to show their friendship. Don"t you think they are lovely?
【参考译文】
狗是一种非常可爱的动物，它们对人类是忠实而友好的，它们是人类的好朋友。它们经常帮助人类做很多的事情，人类以它们而自豪。
狗的吠声可能是在告诉人们或别的动物一些事情，也有可能是在向别人问候的一种方式。有时狗的吠声也是在告诉它的主任它看到了陌生人。当它们沮丧的时候它们会露出牙齿，当它们快乐的时候它们会摇动尾巴。
总之，它们会做各种各样的事情来表示它们的友好。你难道不认为它们很可爱吗？
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