cylinder with differential effect

例句：

1. 1. Thecar has a new engine that is muchmore powerful than the old one.
   这辆车有一个比旧的引擎更强大的新引擎。
2. 2. The scientist used a cylinder to collectsamples from the ocean.
   科学家使用一个圆柱体从海洋中收集样本。
3. 3. The engineerdesigned a cylinder for storing oil in thefactory.
   工程师设计了一个圆柱体用于工厂储存油。