cylinders 是 cylinder 的复数cylinderKK [ˋsɪləndɚ] /ˈsɪləndɚ/发音名词1圆柱体、圆柱数学We had to calculate the volume of a cylinder in class today.今天上课我们要计算圆柱体的体积。2圆筒、筒状物She kept the old maps rolled up inside a cardboard cylinder.她把旧地图卷起来收在纸筒里。3汽缸、气缸机械This small car has only three cylinders but feels surprisingly quick.这台小车只有三个汽缸,开起来却意外地有力。4钢瓶、气瓶The diver checked the pressure in his air cylinder before entering the water.潜水员下水前先检查气瓶的压力。5转轮、弹巢He opened the cylinder of the revolver to show it was empty.他打开左轮手枪的转轮,证明里面没有子弹。用这个字练口说→