cylinders 是 cylinder 的複數cylinderKK [ˋsɪləndɚ] /ˈsɪləndɚ/名詞1圓柱體、圓柱數學We had to calculate the volume of a cylinder in class today.今天上課我們要計算圓柱體的體積。2圓筒、筒狀物She kept the old maps rolled up inside a cardboard cylinder.她把舊地圖捲起來收在紙筒裡。3汽缸、氣缸機械This small car has only three cylinders but feels surprisingly quick.這台小車只有三個汽缸,開起來卻意外地有力。4鋼瓶、氣瓶The diver checked the pressure in his air cylinder before entering the water.潛水員下水前先檢查氣瓶的壓力。5轉輪、彈巢He opened the cylinder of the revolver to show it was empty.他打開左輪手槍的轉輪,證明裡面沒有子彈。