n.动力，推动，促进，刺激，动量，惯性

We need an impetus to study.
我们需要动力去学习。
The government's plan gave fresh impetus to the industry.
政府的计划进一步推动了工业的发展。
The historic strike gave an enormous impetus to the whole French labor movement.
这次历史性的罢工对整个法国的劳工运动起到了很大的推动作用。
The launch of the new product provided the impetus for the company's growth.
新产品的推出为公司的发展提供了动力。
His passion for science was the impetus behind his groundbreaking research.
他对科学的热情是他进行开创性研究的动力。
The government's tax reforms were an economic impetus for private investment.
政府的税收改革是私人投资的经济驱动力。
The fear of failure often serves as a powerful impetus to work harder.
对失败的恐惧常常成为更努力工作的强大动力。
She needed a personal crisis to give her the impetus to make significant life changes.
她需要一次个人危机来激发她做出重大生活改变的动力。
The competition from rival companies provided an impetus for continuous innovation.
来自竞争对手的压力促使他们不断进行创新。
His desire for recognition gave him the impetus to excel in his field.
他渴望认可的愿望使他在专业领域中出类拔萃。
The impetus for the social movement came from the injustices faced by marginalized communities.
社会运动的动力源于边缘化群体所面临的不公。
The impetus for travel can be as simple as wanting to explore new cultures and cuisines.
旅行的动力可能仅仅是对探索新文化与美食的好奇。
The discovery of oil in the region sparked an economic impetus, attracting investors from around the world.
该地区石油的发现引发了经济动力，吸引了全球投资者。