意识到「此刻正在变成回忆」——事情还在发生，你已经开始从将来回头看它。 The awareness that this, right now, is becoming a memory — the moment still happening, and you already looking back at it.
The awareness that this, right now, is becoming a memory — the moment still happening, and you already looking back at it. 意识到「此刻正在变成回忆」——事情还在发生，你已经开始从将来回头看它。
词源etymology
拿 déjà vu 做的手术：déjà（已经）换成 dès（自此刻起）—— 「已经见过」改写成「自此刻起被看见」。 一个借法语构词法铸的英文新词（法语里并无此语）， 与 kuebiko、altschmerz 同属借壳一族——壳是真语法，词是新造的。
Surgery on déjà vu: déjà (already) swapped for dès (from this moment on) — “already seen” rewritten as “seen from now on.” An English coinage cast in French grammar (French has no such phrase), kin to kuebiko and altschmerz in the borrowed-clothes family — the shell’s grammar is real, the word is new.
背景the story
《晦涩悲伤词典》词条（约 2016 年流传开）。déjà vu 是错觉——把新的当成旧的； dès vu 是清醒——当场知道这一刻将成旧的。 旅行最后一天、毕业典礼、孩子睡前的某个瞬间： 事情还热着，你已经在替将来的自己保存它——保存这个动作本身，把你挤出了现场。
A Dictionary of Obscure Sorrows entry (circulating widely from 2016). Déjà vu is an illusion — mistaking the new for the old; dès vu is lucidity — knowing on the spot that this moment is turning old. Last day of the trip, the graduation, a certain instant before the child sleeps: the thing still warm, and you already archiving it for your future self — the archiving itself nudging you out of the room.
中文里的邻居neighbors in chinese
李商隐一联诗里藏着它的坐标：「此情可待成追忆，只是当时已惘然」—— saudade 借它讲思念，dès vu 只认领四个字：「当时已惘」。 惘然不在追忆时，就在当时——这正是 dès vu 的全部内容。 网络时代的口头禅「且行且珍惜」是它的劝告版：劝人珍惜当下； dès vu 不劝，它只报告那阵预支的怀念已经到账。
Li Shangyin’s couplet hides the coordinates: 此情可待成追忆，只是当时已惘然 — “this feeling will keep for remembering; only, at the time, it was already a blur.” saudade borrowed the couplet for longing; dès vu claims just four characters: 当时已惘 — blurred already, at the time. The daze arrives not in retrospect but on the spot — which is this word’s entire content. The internet-era refrain 且行且珍惜 is its advisory edition: it urges you to treasure the moment. dès vu urges nothing; it merely reports that the nostalgia has been debited in advance.
Last day of the trip, and dès vu tinted everything — she was photographing the breakfast she was still eating. 自拟例句 our own example, not a quotation Graduations are dès vu factories; nobody is quite present at their own. 自拟例句 our own example, not a quotation 不在词典中，法语里也没有——借壳词，先交代再用（音同 déjà vu 起头，别写错成它）。 写旅行终章、写毕业、写「快门比眼睛先动」的时代，它在岗。
In no dictionary — and not in French either: a borrowed-clothes word, so disclose before use (and don’t let autocorrect hand you déjà vu). For last chapters of trips, graduations, and the age of shutters quicker than eyes — it is on duty.