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分享一个知识点： Reader question: What does this quote – She said: “I’m aging in dog years” – mean? What’s “dog years” about? My comments: It means she’s growing old fast. “Dog year” is a term used to describe the lifespan of a dog. It’s a folksy term. One human year is said to be worth seven dog years. That is to say, if a dog is 10 years old, then he’s a pretty old dog – in human terms, he’d be compatible to old man of seventy years old, i.e. approaching the grave because the average lifespan of people even in the most developed countries is less than 80 years. If the speaker above is 20 years old, she’d be 140 years in dog years, which is as old as you can (perhaps not) imagine. One human year being equal to seven dog years, by the way, is just a generally accepted rough estimation. It’s nothing scientific because obviously the lifespan of a dog varies from breed to breed. And so don’t take it seriously. Therefore, when someone says they’re aging in dog years, what they’re really saying is often nothing more than “Wow, how time flies”. Reserve a particularly large quantity of salt (doubt) for women especially. When such words come out of the mouth of a woman, ignore them. Women are fond of saying they’re getting old fast not because it’s true but because they’re just fond of saying it, as though they were the only ones who live every day in mortal fear of death. It’s not true – men age, too, but are perhaps too chicken to admit it (^_^). | 
