And today we talk about an expression that comes from the world of vehicles and the engines that power them.
今天，我们讨论一个关于汽车和驱动汽车的发动机的表达。
In an internal combustion engine（内燃机）, a cylinder（气缸） is said to be firing when the fuel inside it is ignited（点燃）, or lit.
在内燃机中，当气缸内的燃油被点燃时，称气缸正在燃烧。
With that small, contained（被控制的） explosion, the engine starts and the car is ready to go!
伴随着那小小的、可控的爆炸，发动机启动了，汽车准备出发了！
Most engines have four cylinders（气缸）.
大多数发动机都有四个气缸。
Some very powerful vehicles have six or even eight cylinders!
一些功能非常强大的车辆有六个甚至八个气缸！
That brings us to today's expression: to fire on all cylinders.
这给我们带来了今天的表达：to fire on all cylinders（全力以赴）。
When you are "firing on all cylinders," you are working or functioning（运行） at the greatest possible level of efficiency, speed or productivity（生产力）.
当你“firing on all cylinders”时，你就是在以尽可能高的效率、速度或生产力工作或运转。
In other words, you are at your peak performance.
换句话说，你发挥出了最佳实力。
You cannot do much better.
你不可能做得比这更好了。
Sometimes we use this expression to mean we are using all our energy to do something.
有时我们我们用这个短语来表示我们正在用我们所有的精力去做某事。
We are working as well as possible.
我们正在尽可能地做得很好。
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