环保人士称，不久前印度老虎还濒临灭绝，这一次是老虎命运的重大转折。
Conservationists say this is a significant reversal in fortune of the tiger, which not so long ago was threatened with extinction in India.
环保人士Valmik Thapar说，在未来的四年里，印度老虎的数量将会是300到400只。
Valmik Thapar, a conservationist, says India will have 300 to 400 tigers in four years.
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。
By 1970, according to a World Wildlife Fund report, only about 4,500 tigers survived throughout the world—half of them in India.
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