5月15日电，上期所原油期货主力合约夜盘收跌0.59%，报484.60元/桶。沪金夜盘收跌2.04%，沪银收跌1.40%。

Group 1 - The main contract for crude oil futures on the Shanghai Futures Exchange fell by 0.59%, closing at 484.60 yuan per barrel [1] - The night trading session saw gold futures drop by 2.04% [1] - Silver futures also experienced a decline, falling by 1.40% [1]