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月阅读原文
I'll be getting the equivalent of about £22,000 a year there, but only £20,000 at the Polytechnic.
出自-2010年6月听力原文
When you compare students of equivalent intelligence and past academic achievements, what sets them apart is hope.
出自-2010年12月听力原文