功力的英文：
motive power

Conquest is the motive.
战利品就是动机。

What motivated you to do such a thing?
引起你做这样的事的动机是什么？

This lesson is thoroughly motivated.
这节课非常生动有趣。

They lack the motivation to study.
他们缺乏学习的积极性。

He is motivated by good intentions.
他的动机是善良的。

smoothing power
修匀功效

These drugs are powerful.
这些药物很有效。

Applications of Power Electronics Technique in Power System
电力电子技术在电力系统中的应用

Wind power: Use of the energy in winds to produce power.
风力:利用风的能量来产生动力。

Power plant is a power of 140 hp piston engine.
动力装置是一台功率140马力的活塞发动机。