【英语时差8,16】中东为何石油丰富？（上）

 It’s well known that when it comes to oil, the Middle East is king. Saudi Arabia has more than 260 billion barrels of proven reserves. Iran has 136 billion. Iraq and Kuwait together nearly 120 billion. Combined, Middle Eastern reserves account for about forty percent of the world’s known oil. Which is odd, because the fossils that make up fossil fuels come mainly from ancient microscopic¹ organisms that sank to the bottom of the ocean. Those on the bottom of the pile were pushed down into the earth’s crust and slowly cooked into crude.

1 microscopic   

adj.微小的，细微的，极小的，显微的

参考例句：

• It's impossible to read his microscopic handwriting.不可能看清他那极小的书写字迹。
• A plant's lungs are the microscopic pores in its leaves.植物的肺就是其叶片上微细的气孔。