spring forward, fall back

短语
英 /ˌspɹɪŋ ˈfɔːwəd ˌfɔːl ˈbæk/    美 /ˌspɹɪŋ ˈfɔɹwəɹd ˌfɔl ˈbæk/

英文释义

短语
  1. Used to recall how timepieces are adjusted for daylight saving time: Local time goes forward in the spring (usually by one hour), and back in fall (autumn). mnemonic
    — [I]f we have to standardize on one time period, it would seem eminently logical to settle on daylight time for the convenience of the greatest number of people. Besides, under such a system, we would once and for all abolish the trivial "Spring forward, fall back."

词源

A pun on spring (“(noun) season of the year in temperate regions in which plants spring from the ground and into bloom and dormant animals spring to life; (verb) to move or burst forth”) and US English fall (“(noun) season of the year in temperate regions when the leaves typically fall from the trees; (verb) to move to a lower position under the effect of gravity”).
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