人身上壓不住的細微發抖
核心畫面直接放在人身上：動作很小，但正因為小，反而藏不住。
verb · B2
To shake with small, fast movements that you cannot control, because you are cold, or because you feel afraid, angry, excited or close to tears.
（因情緒或寒冷）微微發抖
這個拼法底下其實是2個不同的字，意思沒有關係， 只是長得一樣。下面分開列出來。跳到 （因情緒或寒冷）微微發抖 · 箭袋；箭筒
1
quiver
verb, noun核心畫面
One way to hold this word: a bowstring just let go. The movement is small, fast, and it will not stop on command; it dies away by itself. That is the size of it. A hand, a lip, a voice, a leaf, an arrow in a board — all of them can do it, and none of them can be told to stop.
可以想成剛放開的弓弦：幅度很小、頻率很快，而且不是說停就能停，要等它自己慢慢靜下來。重點就在那個「小」。手、嘴唇、聲…更多收起
可以想成剛放開的弓弦：幅度很小、頻率很快，而且不是說停就能停，要等它自己慢慢靜下來。重點就在那個「小」。手、嘴唇、聲音、葉子、射中靶的箭，都可以這樣動。人這邊多半是情緒或冷造成的，東西那邊多半是被碰到或被風吹到，動作本身是同一個。From the word’s history
Wiktionary derives the verb from Middle English quiveren, probably from the adjective quiver ('nimble, active'), itself from Old English *cwifer and probably related to cwic ('alive', modern quick).
根據 Wiktionary，這個動詞來自中古英文 quiveren，很可能是從形容詞 quiver 來的；那個舊形容詞意思是「靈活的、活的」，來自古英語 *cwifer，可能跟 cwic（活著，也就是今天的 quick）有關。可以想成這條線一開始講的是「活蹦蹦地動」，後來收小成那種又細又快的抖。
Wiktionary (kaikki extract, source_ref kaikki:3f6f69a190036ae4:512697814), etymology 3 for 'quiver'; adjective at source_ref kaikki:3f6f69a190036ae4:512695130
Two branches
東西的細微顫動
同樣的動作搬到東西上，情緒拿掉，只剩下物理上的餘動。
verb · B2
(of a thing) To move with very small, fast shakes — leaves in the wind, a plucked string, a dish of jelly, an arrow standing in a target.
（東西）輕輕顫動
A second word, same spelling
2
quiver
noun核心畫面
A different word that only looks the same. One way to hold it: a long case on someone's back with arrows standing in it, close together, so a hand can find one without looking down. The whole point of the object is that whatever is inside can be reached in the middle of the action.
這是另一個字，只是拼法一樣。可以想成背上那個長筒，箭一支支立在裡面、靠得很近，手一伸就摸得到，不用低頭找。這個東西存…更多收起
這是另一個字，只是拼法一樣。可以想成背上那個長筒，箭一支支立在裡面、靠得很近，手一伸就摸得到，不用低頭找。這個東西存在的意義就在「隨時抽得出來」。抓住這一點，第二個意思就自己長出來了：一個人手上隨時能拿出來用的本事，也可以說是放在箭袋裡。From the word’s history
Wiktionary traces this quiver through Middle English quiver and Anglo-Norman quivre to Old Dutch cocare, simply 'container' (the same family as Dutch koker). It has no connection to the shaking word.
根據 Wiktionary，這個 quiver 經由中古英文 quiver、盎格魯諾曼語 quivre，來自古荷蘭語 cocare，意思就是「容器」，跟荷蘭文的 koker 同一家。它跟「發抖」那個 quiver 沒有任何關係，兩個字只是後來拼成同樣的樣子。
Wiktionary (kaikki extract, source_ref kaikki:3f6f69a190036ae4:512641982), etymology 1 for 'quiver'
From the picture
裝箭的長筒，以及它的比喻
先有那個容器，比喻才從「隨時抽得出來」這一點長出去。
noun · B2
A long case for carrying arrows, worn on the back or at the waist so that the arrows can be pulled out quickly one at a time. The same word is used for cases holding crossbow bolts or darts.
箭袋；箭筒
Also in this word
noun · C1
A supply of skills, methods or ideas that someone keeps ready to use, pictured as arrows they can reach for. Often in 'another arrow in someone's quiver'.
（隨時可用的）一套本領