油砂对于投资者来说是个绝佳的机遇。
一方面，美国已有大量的焦油砂制油进口额。
On the one hand, America already imports plenty of oil from the tar sands.
加拿大的寒带森林是油砂的成因。
产层也称为油砂层或生产带。
随着油砂开发技术的日益成熟，油砂成本逐渐下降。
The exploitation cost of oil sand has been getting lower, due to progress in technology.
现在，他们可以集中精力解决油砂开采中的环保问题了。
任何有自尊的石油巨头过去都回避进入油砂开采行业中。
No self-respecting oil major has let a position in the tar sands pass by.
而且相比离案油井来说，含油砂沉积物相比之下更加容易获得。
Oil sand deposits are easier to access than crude from offshore wells.
而且相比离案油井来说，含油砂沉积物相比之下更加容易获得。
Oil sand deposits are easier to access than crude from offshore wells.
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