n. a score in tenpins; knocking down all ten after rolling two balls
v. refrain from harming
v. save or relieve from an experience or action
v. give up what is not strictly needed
n. 剩余, 备用品, 备件, 备用零件, 备用轮胎
a. 多余的, 备用的, 空闲的, 节约的, 瘦的
vi. 节约, 省掉, 宽恕
vt. 节约, 省用, 剩下, 饶恕, 赦免