n.[C]

1. 圆柱；圆筒；圆柱状物
2. （发动机的）汽缸
   The cylinder is getting too much gas and not enough air.

   汽缸里汽油太多而空气不足。

3. （印刷机的）滚筒
4. 圆筒容器；（装液化气等的）钢瓶
5. （左轮枪的）旋转弹膛
6. 【数】柱；柱面

n.

1. a three-dimensional shape with straight parallel sides and a circular or oval cross section.
2. a piston chamber in a steam or internal-combustion engine.
3. a cylindrical container for liquefied gas under pressure.
4. a rotating metal drum in a printing press.