People have had pet dogs for thousands of years. 翻译
问题描述：
People have had pet dogs for thousands of years. 翻译
答
人们把狗当宠物养，已经有数千年的历史。
答
千百年来，人们有宠物狗
答
人类养宠物狗已经有数千年了。
答
你好，这道题的正确答案是：
人们喂养宠物数千年了。
had had pet dogs 喂养宠物狗
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答
人们饲养宠物狗已经有数千年的历史了.