Now, with genetic rescue, we can reverse this extinction vortex by bringing a new genetic variation and increasing the long-term survival of these populations.

现在有了基因拯救技术，我们就可以扭转这种灭绝漩涡，通过增加新的遗传变异以及提高这些种群的长期存活率。

And many scientists refer to this challenge as the extinction vortex, when small, fragmented populations lose genetic variation and become at risk for the vortex of extinction as their populations dwindle.

许多科学家把这种情况称为灭绝漩涡，微小而分散的种群失去遗传变异，随着种群数量减少，就会面临灭绝漩涡的危机。