energy
单词辨析：
物理学中指能量、能源，用于人时则指体力和精力。
Potential energy can be used to do work.
势能可以用来做功。
We should devote our energy to the career.
我们应该致力于这项事业。
通常指外力，如物体相撞时产生的力量。
The force of her fall was broken by the straw mats.
草垫的缓冲作用减弱了她下落的冲击力。
The torrents of water rushed ahead with a terrifying force.
急流汹涌奔腾。
普通用词，泛指一切力量、能力等。
Adults know the power of love.
成年人懂得爱的力量。
The propelling power of trains is usually made of steam or electricity.
火车的动力通常来自蒸汽或电。
通常指体力或人、事物等拥有的实力。
He had hardly enough strength left to move his feet.
他连移动双脚的力气都几乎没有了。
Our national strength has increased since 1982.
自1982年以来，我们的国力增强了。
相关例句：
The work demanded boundless energy and theatrical imagination
这种工作需要具备无限的精力和夸张的想象力。
As his energy drained away, his despair and worry grew
当他的精力耗尽时，他的绝望和担心也增加了。
I used to pour time and energy into projects that were doomed from the start.
我过去常常将大量时间和精力投入到从开始就注定要失败的计划中。
The satellite will study energy radiation from stars.
这颗人造卫星将用来研究恒星的能量辐射。
Nuclear fission releases tremendous amounts of energy.
核裂变释放出巨大的能量。
In a backhanded way, I think a lot of my energy and strength comes from my campaigning.
我觉得我的活力和力量很多都间接来自于我的竞选运动。