今天的核心词汇是energy [‘enədʒɪ]

n. 精力；能量

例句：

It took a lot of energy to move the furniture.

搬这些家具费了很大劲

He was saving his energy for next week‘s race in Tuscon.

他正为下周在特斯康举行的比赛养精蓄锐。

But the findings do not apply to energy burnt up by exercise.

但是这些发现并不适用于通过锻炼而燃烧的能量。

派生：

energetic adj. 精力充沛的

e.g. Enjoy your one full day of vacation, then come back to work more motivated and energetic.

辨析：

force 主要指强制力量，暴力，武力等。

power 基本意思是“力，力量”，指人或国家甚至是某个机构的权力、势力或影响力。

strength 说人时，指“体力，力气”；说物时，指“强度”。也可指“强项，长处”。

energy 主要指人的“精力”。和物体的“能量”

The work took me a lot of ___________.

The old man pulled the wagon with all his ___________.

The man has strong desire for ___________.

These two boys are equal in _________

Get busy living or get busy dying