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能量, 活力
the physical and mental strength required for activity, work, etc.
- After studying all night, he had no energy left for the exam.
通宵学习后，他没有精力参加考试了。
- After the concert, he was out of energy.
音乐会结束后，他没有了精力。
- I need a cup of coffee to boost my energy.
我需要一杯咖啡来提升我的能量。
- She has so much energy, she's always running around.
她有很多精力，总是跑来跑去。
- The kids expended their energy at the playground.
孩子们在操场上耗尽了他们的能量。
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能量, 功率
(physics) a source of power that is required to do any work that may exist in potential, kinetic, thermal and other forms
- The energy required to lift the box depends on its weight and the height it is lifted.
抬起箱子所需的能量取决于其重量和抬起的高度。
- Solar panels convert sunlight into electrical energy.
太阳能电池板将阳光转化为电能。
- Kinetic energy is highest when an object is at its maximum speed.
当物体处于最大速度时，动能最高。
- Thermal energy is transferred from a hotter object to a cooler one.
热能从较热的物体传递到较冷的物体。
- Chemical energy stored in batteries powers electronic devices.
储存在电池中的化学能量为电子设备供电。
同义词：
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能量, 力量
a source of power that can be used to produce heat, light, or to operate different machines
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能源部, 能源部门
the federal department responsible for maintaining a national energy policy of the United States; created in 1977