Stored underground in large salt caves in Louisiana, this stockpile is called the Strategic Petroleum Reserve, and currently contains over 600 million barrels of oil, roughly equivalent to one month's supply.
出自-2013年6月閱讀原文
As a measure to counter future shortages, the American government decided to establish a stockpile of oil in caves underground
出自-2013年6月閱讀原文
A few daring survived, though, along with a few stay-in-the-cave types.
2016年高考英語北京卷 閱讀理解 閱讀E 原文
He followed his tracks and returned to the snow cave, because without shelter, he could die that night.
2015年高考英語北京卷 閱讀理解 閱讀A 原文
Not knowing how much longer he could last, Nicholas did the only thing he could — he huddled in his cave and slept.