我知道美國靠近加拿大的North Dakota就有油頁岩，開采成本高。原油價格必須要在比較高的價位，開采油頁岩才能有利潤

來源: BeagleDog 於 2023-05-02 20:02:22 [舊帖] [給我悄悄話] 本文已被閱讀：次

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