求翻译：猫和狗经过漫长的进化演变，已经脱离了自然界的生物链，不再存在于生态平衡之中，是适合人类家庭的动物，广泛存在于人们的生活、工作之中。在国外，新的趋势是称呼猫和狗为伴侣动物，体现它们在人类社会中的作用。是什么意思？

The evolution of cats and dogs after a long evolution, nature has been out of the food chain, no longer exists in the ecological balance among the animals for the human family, widespread in people's lives, work. In other countries, the new trend is called cats and dogs as companion animals, reflect

Cats and dogs after a long evolution, have been away from the natural evolution of the biological chain, does not exist in ecological balance, and is suitable for human family, the animals are widespread in people's lives and work. In a foreign country, the new trend is called cats and dogs as compa

The cat and the dog pass through the long evolution evolution, has already been separated from the nature biological chain, the defunct during the ecological equilibrium, was an animal which suits the human family, widely exists in during people's life, the work.In overseas, the new tendency is call

Cats and dogs after a long evolution, was out of the nature of the chain, no longer exists in the ecological balance, are suitable for animals of the human family, widespread among the people living, working. Abroad, the new trend is called cat and dog as a companion animal, reflecting their role in

Cats and dogs after a long evolution, was out of the nature of the chain, no longer exists in the ecological balance, are suitable for animals of the human family, widespread among the people living, working. Abroad, the new trend is called cat and dog as a companion animal, reflecting their role in