An impelling force; an impetus.

动力驱使性的力量；

Consumption is the main impetus of impelling technological knowledge progress.

消费是促进技术进步的主要动力之一。

The sports education plays an important role in impelling the human evolution aspect.

体育教育在推动人类进化方面，发挥着巨大的作用。

Teaching assessment is the key joint of impelling the disposition education reformation.

教学评价是推进素质教育教学改革的关键环节。

If we expect that life won't be perfect, we'll be able to avoid an impelling force to quit.

如果我们相信生活不可能是完美的。我们就能避免因一时的冲动而放弃追求。