He has come to be recognized as an expert in the problem of overpopulation and food supply.
由于他的经验促使他终于成为了公认的人口过剩和食物供应问题的专家。
By 1840 about 2,000 Europeans, mainly British, had come to settle in New Zealand and the Maori signed an agreement with these settlers.
截止1840年已有约2,000名欧洲人,其中大部分是英国人,到新西兰定居,毛利人与这些移居者签订了一个协议。