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This potential sixth great extinction is unique in that it is caused largely by the activities of a single species.

这潜在的第六次物种大灭绝独特之处在于，它主要是由单一一个物种的活动造成的。

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Earth is experiencing its "sixth great extinction event" with disease and human activity taking a devastating toll on vulnerable species, according to a major review by conservationists.

根据自然资源保护者的重要回顾报告，地球正经历“第六次大灭绝事件”，因为疾病和人类活动正在令脆弱的物种遭受到灾难性打击。

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The tiger's arrogance has made it a favorite quarry of big-game hunters, who by the middle of this century had pushed the great cat to near-extinction.

CNN: ASIANOW - TIME Asia | India: Much Ado About a Map

"The fate of the European bison provides an example of the way in which a species may be brought to the brink of extinction in a very short time, and then saved only through great efforts, " says Dr. Zbigniew Krasinski of Poland's Bialowieza National Park.

CNN: All creatures great, small and disappearing