impetus
🇺🇸
/ˈɪmpɪtəs/
🇬🇧
/ˈɪmpɪtəs/
something that makes a process or activity happen faster
Her speech gave impetus to the new project.
她的演講為新項目提供了動力。
the force or energy that makes something move
The hill gave impetus to the rolling ball.
山坡給滾動的球提供了動力。