Picture two things slamming into each other — the hard moment of collision, and the force that hits. From that physical crash, the word stretches to any strong 'hit' one thing lands on another, even when nothing physically touches.
From the word’s history
From Latin impactus, past participle of impingere 'to push against, strike' — literally a striking-into.
源自拉丁文 impactus，是 impingere「撞上、衝撞」的過去分詞——字面上就是「撞進去」，所以核心畫面一直是「硬碰硬地撞上」。
Online Etymology Dictionary (etymonline.com), entry 'impact'
登入就可以看每一支怎麼連回核心畫面。
原始詞典資料8 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，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。
impactnoun/ˈɪmpækt/
- 1
The striking of one body against another; collision.
- 2
The force or energy of a collision of two objects.
- The hatchet cut the wood on impact.
- 3
medicinesciencesA forced impinging.
- His spine had an impingement; L4 and L5 made impact, which caused numbness in his leg.
- 4
A significant or strong influence or effect.
- His friend's opinion had an impact on his decision.
- Our choice of concrete will have a tremendous impact on the building's mechanical performance.
impactverb/ɪmˈpækt/
- 1
To collide or strike, the act of impinging.
- When the hammer impacts the nail, it bends.
- As a microbullet impacts the graphene, the diameter of the cone it creates – determined by later examination of the petals – provides a way to measure how much energy the graphene absorbs before breaking.
- 2
To compress; to compact; to press into something or pack together.
- The footprints of birds do not impact the soil in the way those of dinosaurs do.
- 3
To significantly or strongly influence or affect; to have an impact on.
- I can make the changes, but it will impact the schedule.
- 4
rareTo stamp or impress onto something.
- Ideas impacted on the mind.
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。