These are one might think about this these things he says are at least in part determined by certain kinds of natural or geographic and climatic qualities.

而这些，你们可能会说这些特质,如他所说，至少有一部份,是由某种自然,或地理及气候的特质所决定。

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Other people have suggested climatic shift.

也有人归结于气候变化

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