Cách sử dụng
The expression "working/firing on all cylinders" means to be operating at full capacity or giving maximum effort. This phrase is often used to describe a person or a machine that is performing at their best. For example, if someone is working on a project and they are doing their best work, you could say that they are firing on all cylinders. This phrase can also be used to describe a car or any other mechanical device which is operating efficiently and effectively.