從高處落下去
這一支保留了字面的畫面，其他家族都是從這裡借走的。
verb · C2
To throw or send a person or a thing down from a high place, so that they fall suddenly. This use is formal, belongs mostly to older writing and storytelling, and often appears in the passive.
使墜落
核心畫面
One way to hold this word: something goes over a high edge head first, and down it comes. Nothing about it is gentle or slow. There is no walking to the bottom, no warning, no chance to change your mind on the way. Everything else the word does keeps that one picture and only changes what is falling: a solid dropping out of a liquid, water dropping out of the sky, a town dropping into a crisis, a person dropping into a decision, a plan carried out by someone whose feet are already ahead of their thinking.
這個字可以想成一個畫面：東西頭朝前越過高處的邊緣，直直落下。裡面沒有任何慢慢來的成分。沒有一步一步走下去，沒有預告，…更多收起
這個字可以想成一個畫面：東西頭朝前越過高處的邊緣，直直落下。裡面沒有任何慢慢來的成分。沒有一步一步走下去，沒有預告，掉到一半也收不回來。後面每一種用法，都留著這個畫面，只是換掉「落下的是什麼」。可能是固體從液體裡掉出來。可能是水從天上掉下來。可能是一個小鎮掉進危機裡，或一個人掉進一個他還沒想清楚的決定裡。也可能是一個人自己往前衝，腳步跑在腦袋前面。From the word’s history
Latin praecipitatus, from praeceps (head foremost, headlong): prae (before) + -ceps (headed). The literal sense is to send something down head first, which is still the picture inside every modern use.
拉丁文 praecipitatus 來自 praeceps（頭在前面），也就是 prae（在前）加上 -ceps（有頭的）。字面意思就是「讓某物頭朝前落下去」。今天每一個用法裡，都還看得到這個畫面。
Wiktionary etymology supplied in this packet (source_ref kaikki:3f6f69a190036ae4:578829953:38502)
Five branches
從液體裡掉出來：化學
同樣是往下掉，只是掉的東西小到看不見，落點在試管底部。
verb · C2
In chemistry, to make a solid substance come out of a liquid and drop to the bottom, or, of the substance itself, to come out of the liquid in this way. It is often written as precipitate out.
使沉澱；析出
從天上掉下來：天氣
落點換成地面，落下的東西換成水，動作完全一樣。
verb · C2
In weather science, to fall from the sky as water in any form: rain, snow, sleet, or hail. It is used when the speaker does not want to say, or does not know, which kind will fall.
降水（下雨或下雪）
把事情推下來：突然造成
落下的不再是東西，而是事件：本來還在上面撐著，被推了一把就掉下來。
verb · C1
To make something serious happen suddenly, or much sooner than people expected. The thing that happens is usually bad or unwanted: a crisis, a conflict, a collapse, or a sudden change.
驟然引發
人自己衝得太快：倉促
這次沒有人推，是自己頭朝前往前衝，判斷追不上腳步。
adjective · C2
Done or happening too quickly, without enough thought about what might follow. It says the action was rushed, and it suggests that rushing was a mistake.
倉促的；草率的