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TOEFL IELTS BNC: 4820 COCA: 7075

cylinder noun [ C ] SHAPE

a solid or hollow tube with long straight sides and two circular ends the same size, or an object shaped like this, often used as a container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。

cylinder noun [ C ] ENGINE PART

the tube-shaped device, found especially in an engine, inside which the part of the engine that causes the fuel to produce power moves up and down(发动机的)汽缸

a six-cylinder engine六汽缸发动机

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