他们认为岛上的人口增长迅速，然后保持或多或少的稳定速度来增长，直到欧洲人的到来引进了岛上居民对其没有免疫力的致命疾病。

They think its population grew rapidly and then remained more or less stable until the arrival of the Europeans, who introduced deadly diseases to which islanders had no immunity.

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并且英国也正需要这些技工以保持经济增长及其竞争力，至少在英国本土工人掌握更多技能前情况如此。

And skilled workers are just the people Britain needs to keep its economy growing and competitive, at least until its indigenous workforce acquires more skills.

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根据世界银行，2005年和2055年之间农业生产力必须增长三分之二才能保持和人口增长及饮食改变同步。

According to the World Bank, between 2005 and 2055 agricultural productivity will have to increase by two-thirds to keep pace with rising population and changing diets.

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