美国至5月9日当周API汽油库存 -137.4万桶，预期-71.4万桶，前值-197.4万桶。

Group 1 - The core point of the article indicates that the U.S. API gasoline inventory decreased by 1.374 million barrels for the week ending May 9, which is a larger decline than the expected decrease of 714 thousand barrels and the previous week's decline of 1.974 million barrels [1]