水真的在打轉
這一組就是核心畫面本身，沒有轉成比喻：水在轉，而且會把東西往下帶。
noun · B2
A place in a river, in the sea, or in a bath where the water turns fast in a circle and is pulled downwards, so that things floating nearby can be dragged round and under.
漩渦
核心畫面
Water turning fast in one place, with a dip in the middle. Whatever comes close is carried round the edge first, and then pulled down. The important part is not only that it turns, but that things inside it cannot easily get out again.
whirlpool 的畫面可以想成：水在同一個地方一直打轉，中間凹下去像個洞。靠近的東西先被帶著繞圈，接著被往下吸。…更多收起
whirlpool 的畫面可以想成：水在同一個地方一直打轉，中間凹下去像個洞。靠近的東西先被帶著繞圈，接著被往下吸。重點不只是「會轉」，而是「轉著轉著就出不來」。這個「被捲進去、脫不了身」的感覺，正好貫串了這個字後來的各種用法。From the word’s history
The word is built from whirl (to turn round) plus pool (a body of water), through earlier forms whirlpoole and whirlpole; older English also had hwierfepōl for the same thing. The parts still describe the picture exactly: a pool of water that whirls.
這個字由 whirl（打轉）加 pool（一池水）組成，更早的形式是 whirlpoole、whirlpole，古英語另有 hwierfepōl 指同一件事。字面和現在的畫面幾乎重疊：一池會打轉的水。
Wiktionary entry for whirlpool, supplied in this packet (source_ref kaikki:3f6f69a190036ae4:845818657)
Three branches
人造的那池轉水：按摩浴缸
一樣是打轉的熱水，但這次是人做出來、也是人自己走進去的。核心畫面裡的「危險」在這裡換成了「舒服」，「轉」這件事被保留下來。
noun · B2
A large bath, big enough to sit in, that pushes hot water around your body in strong moving streams, used to rest and relax tired muscles.
按摩浴缸
比喻：被情緒或忙碌捲住
把水的畫面整個搬到人的生活上。留下來的不是水，而是那兩件事：力量很強，而且人越陷越深、出不來。
noun · C1
Used in 'a whirlpool of emotion / activity / etc.' to say that a feeling or a situation is very strong or very busy, keeps pulling a person further in, and is hard to get out of.
情緒或事情的漩渦