impulsion
noun /ɪmˈpʌlʃn/
/ɪmˈpʌlʃn/
(formal)- [countable] a strong desire to do something
冲动;强烈欲望 - [uncountable] a reason for doing something
理由;缘由 - Lack of food and water provided much of the impulsion for their speed.
缺少食物和水促使他们加快了速度。
- Lack of food and water provided much of the impulsion for their speed.
词源late Middle English (in the sense ‘the action or an instance of impelling’): via Old French from Latin impulsio(n-), from the verb impellere, from in- ‘towards’ + pellere ‘to drive’.