By 1970, according to a World Wildlife Fund report, only about 4,500 tigers survived throughout the world—half of them in India.

根据世界野生动物基金会的一份报告，到1970年，全世界仅存约4500只老虎——其中一半在印度。

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By 1970, according to a World Wildlife Fund report, only about 4,500 tigers survived throughout the world-half of them in India.

根据世界野生动物基金会的一份报告，到1970年，全世界仅存约4500只老虎——其中一半在印度。

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It stands for World Wide Fund for Nature.

它代表世界自然基金会。

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The observance is organized by a conservation group, the World Wide Fund for Nature, also known as the World Wildlife Fund.

VOA: special.2010.03.22

The problem is even more severe when you look at something that's relatively new, like the hedge fund world.

在相对新鲜的投资领域,你会发现这个问题更加严重,比如在对冲基金领域

耶鲁公开课 - 金融市场课程节选

So the survivorship bias and the backfill bias would be much,much more of a problem in the hedge fund world.

所以生存偏差和回填偏差,会是对冲基金领域里一个相当重大的问题

耶鲁公开课 - 金融市场课程节选

But that gift went toward a pledge he made in 1997 to establish the United Nations Foundation and the Better World Fund, both targeted at strengthening the UN.

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"Rivers, streams and lakes are measurably cleaner than they were before the Clean Water Act, but we still have a long way to go, " said Bob Irvin of the World Wildlife Fund, the world's largest privately funded conservation organization.

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The villa had also been listed by the World Monument Fund as one of the world's 100 most endangered sites before the refurbishment was carried out.

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