在25日，他成为一个商业代理人丰富的遗孀，他很快结婚。
At 25, he became a commercial agent for a rich widow, whom he soon married.
很快他们结婚了，老鼠为他的妻子在树上建了一所漂亮的房子。
After a time they were married, and Rat built a nice tree house for her.
他说，如果这些群体里面的人只跟自己内部的人结婚，那么，这个“极高的生育率群体”的人口会大大超过其他群体的人口，然后，这个群体很快就成为了多数人。
If people in these groups only married within them, he said "ultra-high fertility groups would rapidly outgrow the rest of the population and soon become a majority".
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