spareadj.备用的；多余的；闲置的v.抽出；饶恕；赦免；节约n.备用品；剩余spare bit备用位spare bag备用袋spare rib排骨spare man自由人spare rim备用轮缘spare key备用钥匙spare oil备用油spareableadj.可节省的(可让出的)sparenessn.缺乏；贫乏；少量spare can备用油筒