東西會碎
最字面的一支：實體物品真的會裂開、會碎。
fragile, easily broken · adjective · C2
Easily broken or damaged if you do not handle it with care. Said of things that are not strong, such as glass, old paper, bones, or machines.
易碎
核心畫面
A picture you could hold: a thin glass standing on the edge of a table. Nothing is wrong with it right now — it is whole, it works. But it has no reserve: one knock, one careless hand, and it is gone. Fragile describes that lack of margin, not damage that has already happened.
一只薄玻璃杯擱在桌沿：此刻它好好的，完整、能用，看起來沒事。問題在於它沒有餘裕——只要一個不小心的手肘、一次輕輕的碰…更多收起
一只薄玻璃杯擱在桌沿：此刻它好好的，完整、能用，看起來沒事。問題在於它沒有餘裕——只要一個不小心的手肘、一次輕輕的碰撞，它就碎了。fragile 講的一直是這種「還沒壞，但禁不起碰」的狀態，不是已經壞掉。字根 frangere 就是「打破」，所以這個字骨子裡是在說：破裂離它很近。From the word’s history
From Latin fragilis, from frangere 'to break' — the same root behind fraction and fracture. The word literally means 'breakable', and every modern sense is some version of that.
來自拉丁文 fragilis，字根 frangere 是「打破」；fraction（分數、碎塊）、fracture（骨折、斷裂）都是同一家人。所以 fragile 字面上就是「會破的」。知道這一點很有用：不管後來用在和平、身體還是心情上，底下都是同一個動作——啪一聲斷開。
Wiktionary（fragile 詞源條目，見本題提供的 attested origins）
Three branches
局面撐不住
把玻璃換成一個看不見的結構：和平、經濟、兩個人的關係——它們也可以「一碰就裂」。
fragile, unstable situation · adjective · C2
A fragile situation is weak or not steady, and it can easily get worse if something pushes it. Used of an economy, peace, relations, or unity.
脆弱
人的身體與狀態
同一張「沒有餘裕」的圖畫在人身上，差別只在指的是身體的耐受力、外形給人的感覺，還是當下的狀態。
fragile, physically weak · adjective · C2
Having a weak body because of illness, so that you can easily become more sick or get hurt.
虛弱
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。
fragileadj/ˈfɹæd͡ʒaɪl/
- 1
Easily broken, not sturdy; of delicate material.
- She caught the fragile vase before it could shatter on the floor.
- The chemist synthesizes a fragile molecule.
- 2
Readily disrupted or destroyed.
- The UN tries to maintain the fragile peace process in the region.
- 3
Feeling weak or easily disturbed as a result of illness.
- 4
Thin-skinned or oversensitive.
- He is a very fragile person and gets easily depressed.
fragilenoun/ˈfɹæd͡ʒaɪl/
- 1
Something that is fragile.
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。