廟宇裡最神聖的那一間
這是這個字最原始、最具體的用法，核心畫面本身就是從這裡來的。
noun · C1
A holy room or space inside a temple or other place of worship — the part of the building that is treated as the most sacred.
聖所／內殿
核心畫面
Picture a building you walk into and then keep walking: past the door, past the hall, until you reach one small room right at the middle. That room has been set apart, and only a few people may step inside. Every use of sanctum can be thought of as growing from that last, guarded room.
可以想成一個一層一層往裡走的空間：先進門，再穿過大廳，最後走到最裡面那一小間。那一間被特別留出來，不是誰都能踏進去。…更多收起
可以想成一個一層一層往裡走的空間：先進門，再穿過大廳，最後走到最裡面那一小間。那一間被特別留出來，不是誰都能踏進去。sanctum 的各種用法，都像是從這個「最裡面、被劃出來、要被允許才能進」的畫面長出來的。From the word’s history
From Latin sānctum, "that which is holy" — something set apart from ordinary use.
來自拉丁文 sānctum，意思是「神聖的東西」。可以想成：先有「被劃出來、跟日常隔開」的概念，才有「最裡面那一間」的用法。
Wiktionary entry for sanctum (kaikki extract supplied in evidence packet): "From Latin sānctum (that which is holy)."
Two branches
借來講人的地方
把廟裡那種「外人止步」的感覺整個搬到日常生活，房間本身可以很普通，重點還是誰進得去。
noun · C2
A private place that belongs to one person, where they go to be alone, to think, or to work, and where other people do not come in.
私人小天地