1. By 1982, she was restless and needed a new impetus for her talent. 到1982年，她焦躁不安，需要一个新的对其才华的推动力。
2. And some people take this a step further, and they hypothesize that this migration actually provided an important impetus in the development of ancient Egypt. 有些人对这方面做了进一步的研究，并假设这次的迁移实际上为古埃及的发展提供了一个重要的动力。
3. One impetus for the policy is that companies are already starting to build massive constellations, comprising hundreds or thousands of satellites with many moving parts among them. 政策的一个动力是，公司已经开始建造大规模的星座，包括成百上千的卫星和其中许多运动部件。
4. Because of the barrier of ice to the east, the Pacific Ocean to the west, and populated areas to the north, there may have been a greater impetus for people to move in a southerly direction. 因为东面有冰的屏障，西面是太平洋，而且北面是人口稠密的地区，所以促使人们向南迁移的动力会更大。
5. The impetus for change came from lawyers. 促进转变的动力来自于律师们。
