unfold

名词 n. 动词 v.
中文释义
英 /ʌnˈfəʊld/    美 /ʌnˈfoʊld/

英文释义

名词 n.
  1. In functional programming, a kind of higher-order function that is the opposite of a fold.
动词 v.
  1. To undo a folding. transitive
    — to unfold a map; to unfold a tablecloth; She unpacks the new dress and unfolds it carefully.
  2. To release from a fold or pen. transitive
    — to unfold sheep
  3. To become unfolded. intransitive
    — The curtains unfolded to reveal the stage.
  4. To turn out; to happen; to develop. intransitive
    — Events unfolded in an unexpected way.
  5. To lay open to view or contemplation; to bring out in all the details, or by successive development; to reveal. transitive
    — to unfold one's designs; to unfold the principles of a science
  6. To reassemble a line of text that was split across multiple lines. transitive

词形变化

unfolds present,singular,third-person unfolding participle,present unfolded participle,past unfolded past unfolds plural unfolds present,singular,third-person unfolding participle,present unfolded participle,past unfolded past

词汇关系

近义词
uncover
反义词
fold

词源

词源 1
From Middle English unfolden, from Old English unfealdan (“to unfold”), equivalent to un- + fold.
词源 2
Etymology tree
Proto-Indo-European *h₂ent-
Proto-Indo-European *-s
Proto-Indo-European *h₂éntsder.
Proto-Germanic *anda-
Proto-West Germanic *anda-
Old English and-
Old English on-
Middle English on-
English un-
English fold
English unfold
From un- + fold (“to confine into a fold or pen”).
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