實體的繃緊與拉力
最貼近拉丁字根的一層：真實世界裡被拉緊的東西。
tension (physical tightness) · noun · B2
the state of being tight or stiff, as in a rope, muscle, or wire
緊繃
核心畫面
Picture a rope or a wire pulled tight from both ends — taut, humming, ready to snap. You can feel how stretched it is. That tautness is what every 'tension' shares.
可以想成一條繩子或鋼索被兩頭拉得筆直——繃得緊緊的、微微發顫、好像再用力就要斷掉。你摸得出它有多緊。tension …更多收起
可以想成一條繩子或鋼索被兩頭拉得筆直——繃得緊緊的、微微發顫、好像再用力就要斷掉。你摸得出它有多緊。tension 的每個意思，都帶著這股『被拉到繃緊』的感覺。From the word’s history
From Latin tendere 'to stretch' (via tensionem 'a stretching'), from PIE root *ten- 'to stretch'. The modern core is exactly that — something pulled tight; a taut rope, a tight muscle, a mind on edge and a strained relationship are all kinds of stretching.
來自拉丁文 tendere『拉、伸展』（經 tensionem『拉緊』），再往上是原始印歐字根 *ten-『伸展』。現代的核心正是這個：被拉到繃緊。不論是繃緊的繩子、緊繃的肌肉、緊張的心，還是快要撕破臉的關係，都是某種『被拉緊』。
etymonline.com/word/tension (Latin tendere 'to stretch', PIE *ten-)
Four branches
心裡的緊張
把『繃緊』從繩子搬到心上。
tension (nervousness) · noun · B2
a nervous, worried feeling that makes it hard to relax, especially before something important happens
緊張
人與人之間的緊張
關係像一條被拉緊、快斷的繩子。
tension (conflict between people) · noun · B2
a feeling of distrust and bad temper between people, groups, or countries that could lead to arguing or fighting
緊張關係
對立力量的張力
兩股力往相反方向拉，中間就繃出張力。
tension (conflicting forces) · noun · B2
a difference between two needs, ideas, or forces that pull in opposite ways and cause a problem
張力／矛盾
原始詞典資料7 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。
tensionnoun/ˈtɛnʃən/
- 1
The condition of being held in a state between two or more forces, which are acting in opposition to each other.
- My tensions with Eric over his alleged past actions have been fully resolved.
- 2
A psychological state of being tense.
- 3
A feeling of nervousness, excitement, or fear that is created in a movie, book, etc.; suspense.
- This popular characterization of the Devil incorporates the Trickster archetype. Both are smart, energetic, lying, quick to take advantage of an opportunity. Both have latent narrative appeal in their generation of tension and conflict, their unpredictability, their defiance of hierarchy and authority.
- 4
engineeringnatural-sciencesphysical-sciencesThe state of an elastic object which is stretched in a way which increases its length.
- 5
engineeringnatural-sciencesphysical-sciencesA force transmitted through a rope, string, cable, or similar object (used with prepositions on, in, or of, e.g., "The tension in the cable is 1000 N", to convey that the same magnitude of force applies to objects attached to both ends).
- Most of the overhead system is of the weight-tensioned type, constant tension being automatically applied by balance weights.
- 6
engineeringnatural-sciencesphysical-sciencesVoltage.
tensionverb/ˈtɛnʃən/
- 1
To place an object in tension, to pull or place strain on.
- We tensioned the cable until it snapped.
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。