refuel

过去式：refueled, refuelled

过去分词：refueled, refuelled

现在进行时：refueling, refuelling

词形变化：

动词过去式: refueled/refuelled | 动词过去分词: refueled/refuelled | 动词现在分词: refueling/refuelling | 动词第三人称单数: refuels/refuels |