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阿伯达

阿伯达

较乾燥的大陆气候则从德州到阿伯达（ Alberta），特徵是季节气温剧烈变化、常有风吹、每年难以预期的降水（254-760mm…

Oil sand mining began in Alberta in 1967 . That first mine is closest to the Athabasca River in the top image (1984).

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