Americans use many expressions with the word dog. People in the United States love their dogs and treat them well. They take their dogs for walks, let them play outside and give them good food and medical care. However, dogs without owners to care for them lead a different kind of life. The expression, to lead a dog's life, describes a person who has an unhappy existence.美国人使用很多和狗相关的词汇.在美国,人们喜欢狗,也善待它们.他们带狗散步,让它们到户外活动,并给它们提供优质食物与医疗.然而,无人照顾的流浪狗生活就大不一样了.to lead a dog's life就描述了生活不尽如意的一类人.
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