cylinder/ˈsɪl.ɪn.dɚ/名词(发动机的)汽缸a six-cylinder engine六汽缸发动机圆柱体;圆柱状物;圆筒(常用作容器)Deep-sea divers carry cylinders of oxygen on their backs.深海潜水员背上背有氧气筒。想跟读,去练习