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An impetus is the push or energy that gets something started or makes it move faster — usually a plan, a change, or a project. For example, a good sales month can give a small company the impetus to hire more staff.
推動力、契機
原始詞典資料5 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
impetusnoun/ˈɪm.pə.təs/
- 1
Anything that impels; a stimulating factor.
- The outbreak of World War II in 1939 gave a new impetus to receiver development.
- Once set a strong mind thinking, and you have done all that it needs for its education. It matters little what is the first impetus, so that it only be set to work.
- 2
A force, either internal or external, that impels; an impulse.
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The force or energy associated with a moving body; a stimulus.
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historyhuman-sciencessciencesA principle of motive force, held as equivalent to weight times velocity by John Buridan, in an auxiliary theory of Aristotelian dynamics introduced by John Philoponus, describing projectile motion against gravity as linear until it transitions to a vertical drop and the intellectual precursor to the concepts of inertia, momentum and acceleration in classical mechanics.
- 5
An activity in response to a stimulus.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。