machine是可数名词。复数:machines。解释:machine 英[məˈʃi:n] 美[məˈʃin] n. 机器,机械; 机械般的人; 核心; vt. 用机器制造,用机器加工; vi. 被机器切削; [例句]I put the coin in the machine and pulled the lever我把硬币投入机器,拉动控制杆。The machines start to wear down, they don't make as many nuts and bolts as theyused to 机器开始出现磨损,螺母和螺钉的产量不如从前了。In the future the machines will need spare parts and maintenance. 这些机器将来会需要备件和维修保养。Most shredding machines are based on a revolving disc fitted with replaceableblades. 大多数粉碎机都是基于一个装有可替换刀片的旋转圆盘来实现作业的。