他的那些文章是促进变革的主要推动力。

His articles provided the main impetus for change.

《牛津词典》

到1982年，她焦躁不安，需要一个新的对其才华的推动力。

By 1982, she was restless and needed a new impetus for her talent.

《柯林斯英汉双解大词典》

消费者支出是夏季经济增长背后的推动力。

Consumer spending was the driving force behind the economic growth in the summer.

《柯林斯英汉双解大词典》

Against the backdrop of Marx's thought pervading - not just Russian life but beginning to pervade Russian government-- against this backdrop, the idea of struggle, as in class struggle, is going to predominate.

马克思的思想不但席卷,俄国普通百姓的生活，并且开始影响俄国政府-,在这样的背景下，人们认为阶级斗争是历史发展的主要推动力。

耶鲁公开课 - 文学理论导论课程节选

That slavery may have its bad aspects but it has been the engine of good, it has been the engine of empires, the engine of wealth, the engine of greatness.

奴隶制本身也有不好的方面,但是它曾是一切善行的起源,帝国崛起的推动力,是一切财富的来源,伟大事物的起源

耶鲁公开课 - 美国内战与重建课程节选