用法不同:strength:指机体内部的能力，是依靠身体组织而存在的力，比如体力,强度,力量;power:最普通用词，泛指一切力量或能力等。
power:
n.权力;能力;控制力;影响力;操纵力;统治;政权;机会
v.驱动，推动(机器或车辆);(使)迅猛移动，快速前进
例句:
She felt she was in a position of power.
她觉得她自己有权力。
They wish to limit the power of the State.
他们希望限制政府权力。
4 to the power of 3 is 4.
4的3次方是4。
The present regime has been in power for two years.
现政权已经执政两年了。
It is not within my power to help you.
我是爱莫能助啊。
strength:
n.力量;强度;力气;体力;毅力;坚强决心;意志力量
例句:
The sea wall was not proof against the strength of the waves.
防波堤挡不住海浪的力量。
I sat down for a moment to gather my strength.
我坐下片刻积蓄力量。
Her decision to continue shows great strength of will.
她决心坚持下去，显示出了很大的意志力。
I got the job on the strength of your recommendation.
由于您的推荐，我得到了那份工作。
