“赈济物”可以翻译为 "relief supplies" 。
“relief”有“救济、援助”之意，“supplies”表示“物资、供应品” ，二者组合“relief supplies” 准确传达了“赈济物”即用于赈灾救济的物资这一含义。例如：The government has sent a large quantity of relief supplies to the disaster-stricken area.（政府已向灾区运送了大量赈济物。）