spentadj.失效的;精疲力竭的动词spend的过去式和过去分词
spent batteries废旧电池
spent cartridge发射过的弹壳
spent catalysts废催化剂
spent tan press废鞣料压机
spent potlining废槽衬
spent fuel rods核乏燃料棒
spent lubricant废润滑剂
spent conviction[法] 失效的判决
spent regenerant废再生剂
spent extractant使用过的萃取剂