专家们并不能确切地知道，人们是在什么时候开始养鱼的，但专家们说，人们对鱼的兴趣已经有好几千年了。
Experts do not really know when people began keeping fish as pets. But they say that people have been interested in fish for thousands of years.
专家们并不能确切地知道，人们是在什么时候开始养鱼的，但专家们说，人们对鱼的兴趣已经有好几千年了。
Experts do not really know when people began keeping fish as pets. But they say that people have been interested in fish for thousands of years.
应用推荐