有两只金鱼缸。左边一只养了八条红金鱼,右边一只养了一条黑金鱼。红金鱼们望着黑金鱼发呆,心想:黑金鱼住的地方多么宽敞。黑金鱼望着红金鱼们也发呆,心想:红金鱼们住的地方多么热闹。于是,红金鱼们纷纷往黑金鱼的缸里跳,黑金鱼也急切地往红金鱼的缸里跳。结果,左边缸里变成了一条黑金鱼,右边缸里变成了八条红金鱼。 There are two goldfish tanks. The left one raised eight goldfish, the right one raised a black goldfish. The red goldfish are looking at the black goldfish in a daze, thinking: how spacious black goldfish live. Black goldfish are looking at the red goldfish are also in a daze, thinking: how lively red goldfish where they live. Thus, the red goldfish have to jump to the black goldfish cylinder, black goldfish also eagerly jump to the cylinder of goldfish. As a result, the left cylinder into a black goldfish, into the right cylinder into eight goldfish.