身體替昨天付的帳
這一家講的是「掛在身上」的那種殘留：昨天過量，今天難受。
noun · B2
The bad way your body feels on the day after you have drunk too much alcohol — usually a headache, a dry mouth, and a sick, tired feeling.
宿醉
核心畫面
One way to hold hangover: yesterday has not finished with you yet. Something from the night before, or from a much older time, is still hanging over today — heavy, unwanted, and clearly out of place now that the occasion is over. The word is always about the leftover, never about the good part that caused it. That is why it works the same way whether what is hanging over you is last night's drinking, this morning's sugar, or a rule from fifty years ago.
「hangover」的核心畫面可以想成：昨天還沒放過你。前一晚的東西，或是更久以前留下來的東西，還掛在今天頭上——沉…更多收起
「hangover」的核心畫面可以想成：昨天還沒放過你。前一晚的東西，或是更久以前留下來的東西，還掛在今天頭上——沉沉的、沒人想要的，而且場子早就散了它還在。這個字講的永遠是「剩下來的那份」，不是造成它的那個熱鬧。也因為這樣，掛在你頭上的是昨晚的酒、今天早上的糖，還是五十年前的一條規定，用法都一樣。From the word’s history
Wiktionary gives hangover as American English, formed from hang + over, with the drinking sense first recorded in 1904 and the sleeping-over-a-rope sense in 1894.
來源資料說 hangover 是美式英語，由 hang 加 over 組成；喝酒的意思大約 1904 年開始有紀錄，睡在繩子上的那個用法則是 1894 年。字面上的「掛過去」正好對上今天的用法。
Wiktionary entry for 'hangover' (kaikki extract, source_ref kaikki:3f6f69a190036ae4:963662947): 'American English; hang + over. First sense was first attested in 1904. Third sense was first attested in 1894.'
Two branches
時代留下來、還沒散掉的東西
把「昨天掛到今天」的時間差拉長：不再是一個晚上，而是一個時代。
noun · C1
Something left over from an earlier time that still exists or still happens, although it is not needed or useful any more.
從過去留下來的東西