求助GWD阅读的一句翻译

shelvey

Still, Krech attributes secondary if not primary responsibility for the extinctions to the Paleoindians,arguing that humans have produced local extinctions elsewhere. 看不懂
Paleoindians不是一类人吗？怎么灭绝了呢？

配上上下文（如果需要的话）
According to a theory advanced by researcher Paul Martin, the wave of species extinctions that occurred in North America about 11,000 years ago, at the end of the Pleistocene era, can be directly attributed to the arrival of humans, i.e., the Paleoindians, who were ancestors of modern Native Americans.However, anthropologist Shepard Krech points out that large animal species vanished even in areas where there is no evidence to demonstrate that Paleoindians hunted them. Nor were extinctions confined to large animals:small animals, plants, and insects disappeared, presumably not all through human consumption.Krech also contradicts Martin’s exclusion of climatic change as an explanation by asserting that widespread climatic change did indeed occur at the end of the Pleistocene.Still, Krech attributes secondary if not primary responsibility for the extinctions to the Paleoindians, arguing that humans have produced local extinctions elsewhere.But, according to historian Richard White, even the attribution of secondary responsibility may not be supported by the evidence.White observes that Martin’s thesis depends on coinciding dates for the arrival of humans and the decline of large animal species, and Krech, though aware that the dates are controversial, does not challenge them; yet recent archaeological discoveries are providing evidence that the date of human arrival was much earlier than 11,000 years ago.

Pythagoras

Ｋ也反对Ｍ把气候变化这个原因排除在外，认为在Ｐ时代的末期确实发生过大范围的气候变化。

youyiyoutian

Krech also contradicts Martin’s exclusion of climatic change as an explanation by asserting that widespread climatic change did indeed occur at the end of the Pleistocene。这个句子是什么意思，究竟有气候变化还是没有啊。绕晕了

shelvey

多谢两位好人

P.S.edwardelricGG 果然认识很多单词的说。。。
要是单词能复制就好了～～

billsq

Still, Krech attributes secondary if not primary responsibility for the extinctions to the Paleoindians, arguing that humans have produced local extinctions elsewhere.But, according to historian Richard White, even the attribution of secondary responsibility may not be supported by the evidence

同意LS的解释。继续往下看的话，Krech的这个观点又被Richard White否定了：目前的证据也不能证明古印度人对动物物种的灭绝负有第二责任。然后White说Martin’s 认为大型动物灭绝的时期正好是把印度人到来的时候，虽然Krech觉得这个论点有争议，但是没有提出疑问。最后说人类学家的最新发现证明印度人其实早在11000年前就已经在哪里出现了－>意旨不是因为他们造成大型动物的灭绝，否定了Martin和Krech的观点。

starry1008

翻译：
尽管如此，SK把灭绝的第二责任 (如果不是首要)归于古印度人，他认为人类在其它地方造成过当地消灭。
lz不是人灭绝 atttribute to 是归因于