真正的瓦斯燈，以及它的光
這一組就是字面上的意思：燈具本身，還有它發出來的光。兩個意思看的是同一件東西，只是一個看物體，一個看光。
noun · B2
A lamp in a house or on a street that makes light by burning gas, of the kind used before electric lighting became common.
瓦斯燈（煤氣燈）
核心畫面
Start with the lamp itself: a small flame behind glass, fed by a gas pipe, giving a yellow light that never sits quite still. The important part is not that it burns gas — it is that someone can reach over and turn the flame up or down without you seeing them do it. Both halves of this word grow out of that picture. One half stays literal: the lamp, and the light it throws. The other half comes from a play named after such a lamp, where the brightness changes and the person who changed it says nothing changed at all.
gaslight 可以先想成一盞燒瓦斯的燈：玻璃罩裡一小簇火，光是黃的，而且從來不完全靜止。真正的關鍵不是它燒什麼，…更多收起
gaslight 可以先想成一盞燒瓦斯的燈：玻璃罩裡一小簇火，光是黃的，而且從來不完全靜止。真正的關鍵不是它燒什麼，而是那個亮度有人能偷偷轉大轉小，你不一定看得到。這個字的兩邊都從這個畫面長出來。一邊留在字面上：那盞燈，還有它發出來的光。另一邊來自一齣以這種燈命名的舞台劇——燈明明被人調暗了，動手的人卻說燈根本沒變。From the word’s history
The noun is simply gas + light. The verb is recorded as coming from the 1938 stage play Gas Light and its film versions, in which a husband changes small things in the house, including the lamps, and tells his wife she is imagining it.
名詞就是 gas（瓦斯）加 light（燈、光）拼起來的，字面上是「瓦斯的燈」。動詞則有另一條來源：1938 年的舞台劇《Gas Light》和它的電影版。劇裡丈夫悄悄改動家裡的小東西，包括把燈調暗，再告訴妻子那都是她自己想像出來的。
Wiktionary entries for gaslight (kaikki:3f6f69a190036ae4:821715663 "From gas + light"; kaikki:3f6f69a190036ae4:821733117 "From the 1938 stage play Gas Light by Patrick Hamilton")
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