气力的英文：
(n) strength
energy

参考例句：

He has more science than strength.
他的技巧优于他的气力。

by (main) force
用蛮力, 全靠气力; 以最大的力气

He had little steam left in him after a hard day's work.
"辛苦工作一天后,他几乎没有一点气力了。"

Solving the problem calls for efforts.
解决这问题得花些气力。

Great works are performed not by strength but by perseverance.
伟大作品的完成不靠气力靠毅力。

Louise pressed with all the strength of her little hands on the top of the portmanteau
罗茜用尽她所有的气力压那只提包的盖子。

Her violent partisanship was fighting Soames's battle
她的激烈偏袒等于替索米斯卖气力。

Both of the wrestlers tried to tumble the adversary with all their strength.
双方摔跤运动员都使出了全身气力想把对手摔倒。

I wish singing on the stoop didn't use up so much of a man's wind!
我但愿弯着腰唱歌，不费这么大的气力才好。

"For most people, it takes considerable effort to learn a long poem by heart."
对于大多数人来说,背诵一首长诗需要下很大的气力。

strength是什么意思：
n. 力量；长处；勇气；强度

Union is strength
团结就是力量

Union is strength.
团结就是力量。

Maximum crushing strength (=crushing strength at maximum load)
抗压极限强度

The strength of the chain is in the weakest link.
链子的承受力在于最薄弱的一环。

The moral of the story is that 'Solidarity is strength'.
这个故事的教益在于'团结就是力量'。

energy是什么意思：
n. 能量；精力；活力；精神

disintegration energy
蜕变能

triggering energy
触发能

The energy of motion is called kinetic energy.
运动的能量称为动能。

wind energy potential
风能潜力

Their power and energy began to disappear.
他们的力量和精力不复存在了。