TED演讲:石油真正的代价(3)
The oil produced from either method 藉由以上两种方式开采的原油 produces more greenhouse gas emissions than any other oil. 比以其他方式 开采的原油排放更多温室气体 This is one of the reasons why it's called 这正是它被称为 the world's dirtiest oil. 世上最脏油类的原因之一 It's also one of the reasons why it is 这也是使它成为 the largest and fastest-growing single sou...