This marks precisely—to within a few thousand years—the point of mass extinction on the land.

这明确标志着正是在这几千年中，发生了陆地上的大规模灭绝。

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This observation is a useful starting point for any discussion of extinction as it highlights the role of luck and chance in the extinction process.

对一些灭绝的讨论像它在灭绝过程中突出了运气和机会的角色，这个观察是一个很有用的出发点。

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Many reefs have been fished to a point of extinction.

很多礁石已被过度捕捞面临消失的绝境。

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Especially, one supposes, to those who systematically blasted it to the point of extinction even after it was declared an endangered and protected species in 1973.

ECONOMIST: New kid on the block

But the nature of war appears to be changing, as interstate conflict has become rare to the point of extinction, leaving violent clashes in which civilians are particularly vulnerable.

ECONOMIST: Civilians in conflict

The mathematical sciences were neglected almost to the point of extinction within the mediaeval educational system, the schools teaching almost no mathematics and the universities only paying lip service to a narrow curriculum of mathematical topics at the very lowest level.

FORBES: A Long Forgotten Father of the Scientific Revolution