cylinder

• 名词，指由两个平行且全等的圆形底面以及连接它们的曲面所围成的三维几何体；也泛指这种形状的物体。

A noun referring to a three-dimensional geometric shape with two parallel circular bases connected by a curved surface, or a solid object of this shape.

1. Geometric shapeB1formal

   A solid geometric figure with two parallel circular bases and a curved surface connecting them.

   圆柱体

   • The volume of a cylinder is calculated using its radius and height.
   • A can of soda is shaped like a cylinder.
   • The teacher drew a cylinder on the board for the geometry lesson.

2. Engine componentB2formaltechnical

   A part of an engine, typically in a car, where fuel is burned to produce power.

   气缸

   • The car's engine has six cylinders.
   • A mechanic checked the cylinder for any damage.
   • The piston moves up and down inside the cylinder.

3. A2formal

   A cylindrical container, often used for storing gases or liquids.

   气瓶

   • The gas cylinder needs to be refilled.
   • She bought a cylinder of oxygen for the camping trip.
   • The laboratory stores chemicals in metal cylinders.

   同义词bottlecanistercontainerdrumtankvessel