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单词 cylinder
释义
cylindercylinder /ˈsɪləndɚ/ ●●○ noun [countable] Etymology 1 math, geometry a shape which has two circular ends and straight sides2an object or container such as a can which is in the shape of a cylinder:  a cylinder of oxygen3the tube within which a piston moves forward and backward in an engine:  a four-cylinder engine4run/hit/fire on all cylinders to operate or perform very well:  When we’re hitting on all cylinders, we’re hard to beat. [Origin: 1500–1600 Latin cylindrus, from Greek, from kylindein to roll]
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更新时间:2025/3/22 5:43:01