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。

youdao

It would have caused thousands of impacts, generating global fires and depositing nanodiamonds at the 'extinction boundary' marking the point in time when many species died out.

而这一个小时的雹灾却造成了成千上万次的撞击，产生全球性的火灾并且在“灭绝的边界”(指陨石或陨石坑)沉积了很多“纳米钻石”，造成了当时很多物种的灭绝。

youdao

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。

youdao

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