'tar sand' 的定义
含 tar sand的例句
Its tar sands are known to hold 176 billion barrels. Times, Sunday Times (2010)But the team also discovered the same technique can be used on Earth to produce fuel from tar sands. The Sun (2009)Powerful interests inside and outside Canada are determined to find a sustainable method of producing oil from the tar sands. Times, Sunday Times (2009)F&C's investment criteria now allow firms investing in tar sands provided their involvement does not extend beyond 3% of their assets. Times, Sunday Times (2012)
tar sand 的趋势
极少使用。在柯林斯辞典中， tar sand 属于使用频率排在后 50% 的词语之一。
tar sand 的定义—— 柯林斯 英语词典
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