One way to hold it: something from the past comes back all at once, in a flash, without being called — a sudden return along a line that should only run forwards.
From the word’s history
A transparent compound: flash + back. The word carries its own picture — 'back' gives the reversed direction, 'flash' gives the suddenness, and every sense is some line running backwards in an instant.
構詞完全透明：flash（閃、一瞬間）+ back（往回）。這個字不需要查字源，它自己就把畫面寫在臉上了——back 給了「逆向」，flash 給了「一瞬間」。四個意思其實都只是在問：往回衝的是什麼？記憶、劇情，還是火。
Wiktionary 'flashback' etymology (flash + back)
登入就可以看每一支怎麼連回核心畫面。
原始詞典資料7 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
flashbacknoun/ˈflæʃ.bæk/
- 1
authorshipbroadcastingcommunicationsA dramatic device in which an earlier event is inserted into the normal chronological flow of a narrative.
- 2
human-sciencespsychologysciencesA vivid mental image of a past trauma or other sensation that the trauma is happening in the present, especially one that recurs.
- 3
Something that evokes old memories; a throwback.
- We danced fast to Martha and the Vandellas, Supremes or even the Beach Boys. Slow to Dusty Springfield or Righteous Brothers (how's that for a heavy flash back?)
- 4
A similar recurrence of the effects of a hallucinogenic drug.
- Maude Lebowski: What do you do for recreation? / The Dude: Oh, the usual. I bowl. Drive around. The occasional acid flashback.
- 5
The condition of the flame propagating down the hose of an oxy-fuel welding system.
- 6
computingdatabasesengineeringA query that operates against data from an earlier time, before it was changed.
- As noted, that method provides limited support for multi-table flashbacks.
- […] less used and specialized types of queries, including composite queries, hierarchical queries, version flashbacks, and parallel queries.
flashbackverb/ˈflæʃ.bæk/
- 1
To undergo a flashback; to experience a vivid mental image from the past.
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。