Steam became the motive force of the Industrial Revolution as coal and iron ore were the raw materials.

蒸汽成为了工业革命中的主要动力，当时的煤矿和铁矿成为了是工业的主要原材料。

The confidence she felt in her own powers of exposition was a motive force that overcame all resistance.

她对自己的表达能力充满信心， 这是一种克服所有阻力的动力。

We can take it as a motive force for us to make progress, make full use of it and avoid being hurt by it.

我们可以把它当做动力来进步，充分利用它，并防止伤害。

He had a chance to measure the motive forces of men; their qualities of character; their foresight; their tenacity of purpose.

他有机会衡量人们的动力；他们的品格；他们的远见；他们坚韧的目标。

I there argued that change in the excess of investment over saving was the motive force governing changes in the volume of output.

我在那里争论说， 投资超过储蓄的变化是支配产出量变化的动力。

The conflict is no longer between the men, but between the motors that drive the men, and the men tend to succumb to their own motive forces.

冲突不再发生在男人之间，而是发生在驱动男人的发动机之间，而男人往往会屈服于自己的动力。