Perhaps only 5% of coral reefs can now be considered pristine, a quarter have been lost and all are vulnerable to global warming.

现在未遭受人类破坏的珊瑚礁大约只剩5% ，被完全破坏的占到1/4，而面对全球气候变暖，所有的珊瑚礁都是不堪一击的。

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Perhaps only 5% of coral reefs can now be considered pristine, a quarter have been lost and all are vulnerable to global warming.

现在未遭受人类破坏的珊瑚礁大约只剩5% ，被完全破坏的占到1/4，而面对全球气候变暖，所有的珊瑚礁都是不堪一击的。

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