请你把中文翻译成为英文
同时，中国在过去几年中积累了庞大的战略石油储备，从2015年的1.91亿桶增加到去年的8亿桶。
China has amassed an enormous strategic oil reserve in the last few years, growing from 191 million barrels in 2015 to as much as 800 million barrels last year.