TRANSLATION，3X

Still, Krech attributes

secondary if not primary responsibility

for the extinctions to the Paleoindians,

(25)      arguing that humans have produced

local extinctions elsewhere.

这句话的大概意思我了，但准确翻译不出，HELP！

Still, Krech attributes secondary if not primary responsibility for the extinctions to the Paleoindians, arguing that humans have produced local extinctions elsewhere.

然而，Krech将灭绝的二级原因，如果不是根源原因，归因为Paleoindians，他认为人类造成了其他地方的局部灭绝。

望文生义，请指正。