expand

动词 v.
中文释义

英文释义

动词 v.
  1. To change (something) from a smaller form or size to a larger one; to spread out or lay open. transitive
    — You can expand this compact umbrella to cover a large table.
  2. To increase the extent, number, volume or scope of (something). transitive
    — A flower expands its leaves.
  3. To express (something) at length and/or in detail. transitive
  4. To rewrite (an expression) as a longer, yet equivalent, sum of terms. transitive
    — Use the binomial theorem to expand #123;(x#43;1)#125;⁴.
  5. To become, by rewriting, a longer, yet equivalent, sum of terms. intransitive
    — The expression #123;(x#43;1)#125;⁴ expands to x⁴#43;4x³#43;6x²#43;4x#43;1.
  6. To multiply both the numerator and the denominator of a fraction by the same (non-zero) number (which yields a fraction of equal value). transitive
    — Expanding 4#47;7 by 3 gives 12#47;21.
  7. To change or grow from smaller to larger in form, number, or size. intransitive
    — Many materials expand when heated.
  8. To increase in extent, number, volume or scope. intransitive
  9. To speak or write at length or in detail. intransitive
    — He expanded on his plans for the business.
  10. To feel generous or optimistic. intransitive
  11. In a hierarchical list (such as a directory tree or table of contents), to show the subentries of (an entry). transitive

词形变化

expands present,singular,third-person expanding participle,present expanded participle,past expanded past no-table-tags table-tags glossary inflection-template expand infinitive expand first-person,present,singular expanded first-person,past,singular expand present,second-person,singular expandest archaic,present,second-person,singular expanded past,second-person,singular expandedst archaic,past,second-person,singular expands present,singular,third-person expandeth archaic,present,singular,third-person expanded past,singular,third-person expand plural,present expanded past,plural expand present,subjunctive expanded past,subjunctive expand imperative,present - imperative,past expanding participle,present expanded participle,past

词汇关系

近义词
enlarge elaborate expand on
反义词
contract limit factor
衍生词
coexpand companding expandability expandable expandedly expandedness expander expandingly expandingness expand one's wings hyperexpanded misexpand nonexpanded nonexpanding overexpand reexpand semiexpanded underexpanded unexpanded unexpanding
相关词
expanse expansible expansile expansion expansionism expansive

词源

Recorded in Middle English since 1422 (as expanden, expaunden), from Anglo-Norman espaundre, from Latin expandere (“to spread out”), itself from ex- (“out, outwards”) + pandō (“to spread”). Doublet of spawn.
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