會轉的圓台
這一支就是畫面本身，看得到、摸得到，兩種都是圓台加上「繞圈」這個動作。
noun · B1
A machine at a fair or a park that turns round and round, with model horses or cars fixed on it for children to sit and ride on, usually with music playing.
旋轉木馬
核心畫面
Picture a round platform that turns on one spot. You step on, the music starts, and the same trees, the same faces, the same stall come past you again and again. You are moving the whole time, and you end exactly where you began. Getting off is not really your decision either: you wait for it to slow down. Every use of this word keeps some part of that picture, and which part is kept is what tells the uses apart.
可以想成一塊原地打轉的圓台。你踩上去，音樂一響，同樣的樹、同樣的人、同樣的攤位一次又一次從眼前經過。你整段時間都在動…更多收起
可以想成一塊原地打轉的圓台。你踩上去，音樂一響，同樣的樹、同樣的人、同樣的攤位一次又一次從眼前經過。你整段時間都在動，最後卻停在出發的地方。要下來也不太是你決定的，得等它慢下來。這個字的每個用法，都留著這幅畫面的一部分。差別只在留下的是哪一部分。From the word’s history
Wiktionary gives the word as merry (adjective) plus go round (verb) - literally a happy going-round, which is the platform itself.
來源把這個字拆成 merry（開心的）加 go round（繞圈轉），字面上就是「開心地繞圈」。這正好就是那塊會轉的圓台本身。
Wiktionary entry for merry-go-round, etymology: "From merry (adjective) + go round (verb)." (packet source_ref kaikki:3f6f69a190036ae4:536056172:24849)
Two branches
停不下來的循環（比喻）
這裡只借走畫面裡最累人的那一段：一直在動、風景重複、想停還得等。木馬和音樂都被丟掉了。
noun · B2
A fast, non-stop series of similar events that keep following one another, so that life feels like a circle you cannot get off.
停不下來的循環