sparevt. 节省,俭省;不用,抽出,省掉;宽恕,饶(命),救命,使某人免遭(麻烦等);出让,割爱,分让;
adj. 多余的,剩下的(钱等),空闲的(时间等);预备的,备用的,替换用的;多余的,瘦的,少量的;薄弱的,简陋的,粗陋的;
n. 备用零件,备用轮胎;节省,俭省;〈美〉(头两个球把十柱打得)全倒;预备品,替换品;
vi. 节约;节省;饶恕;宽容;
It's quite simple. You put a very hot, wet cloth on your shoulder for one minute. Then put a packet of frozen peas on the shoulder for one minute. And so on and so on.