rock tar

 
  • n. 原油

rock tar的用法和樣例:

例句

用作名詞 (n.)
  1. Naturally occurring rock oil is referred to as crude oil or petroleum.
    天然形成之石油,我們稱作原油或石油。
  2. As long as the price of crude oil continues to increase, the technology and money for tar sands mining will probably be found.
    只要原油的價格繼續上漲,開採油砂的技術和投資是會有的。
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