Some examples of mammals are man, pigs, and dogs.
哺乳类动物的例子有人类，猪和狗。
Dogs are friends of man not only because they are lovely but also because they are faithful to their master.
狗是人类的朋友，不仅因为他们可爱，而且因为他们忠实于主人。
Dogs, cats and monkeys are allanimals, and man is also an animal.
狗、猫和猴子都是动物，而且人也是动物。
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