世界自然基金会的詹森·克莱说，“人越来越多，越来越有钱，消费的粮食也越来越多，但地球还是那个地球。”

More people, more money, more consumption, but the same planet, 'Jason Clay of the World Wildlife Fund told the AFP news agency.

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詹森1968年发表的博士论文，为此定下了正确的基调：他发现，作为一个整体，共同基金经理人无法跑赢大盘。

Mr Jensen doctoral thesis published in 1968 set the right tone when he found that, as a group, mutual fund managers could not outperform the market.

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詹森1968年发表的博士论文，为此定下了正确的基调：他发现，作为一个整体，共同基金经理人无法跑赢大盘。

Mr Jensen doctoral thesis published in 1968 set the right tone when he found that, as a group, mutual fund managers could not outperform the market.

youdao