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  1. period

    • IPA[ˈpɪərɪəd]

    英式

    • n.
      a length or portion of time;a portion of time in the life of a nation, civilization, etc. characterized by the same prevalent features or conditions
    • adj.
      belonging to or characteristic of a past historical time, especially in style or design
    • noun: period, plural noun: periods

    • 釋義
    • 相關詞
    • 片語
    • n.
      名詞
    • 1. a length or portion of time:

      he had long periods of depression

      the period 1977–85

    • 2. a portion of time in the life of a nation, civilization, etc. characterized by the same prevalent features or conditions:

      the early medieval period

    • 3. a major division of geological time that is a subdivision of an era and is itself subdivided into epochs:

      the Cretaceous period

    • 4. each of the set divisions of the day in a school allocated to a lesson or other activity:

      two periods of PE are allocated on the timetable

      he interviewed the teachers when they had a free period

    • 5. each of the divisions of the playing time of a sporting event:

      the Lightnings ran at the Leafs hard in a very rough first period

    • 6. the interval of time between successive occurrences of the same state in an oscillatory or cyclic phenomenon, such as a mechanical vibration, an alternating current, a variable star, or an electromagnetic wave.
    • 7. the time taken by a celestial object to rotate about its axis, or to make one circuit of its orbit.
    • 8. the interval between successive equal values of a periodic function.
    • 9. a flow of blood and other material from the lining of the uterus, lasting for a few days and occurring in sexually mature women who are not pregnant at intervals of about one lunar month until the menopause:

      she's got her period

      period pains

    • 10. a punctuation mark (.) used at the end of a sentence or an abbreviation; a full stop.
    • 11. added to the end of a statement to indicate that no further discussion is possible or desirable:

      he is the sole owner of the trademark, period

    • 12. a set of elements occupying a horizontal row in the periodic table.
    • 13. a complex sentence, especially one consisting of several clauses, constructed as part of a formal speech or oration.
    • 14. a complete idea, typically consisting of two or four phrases.
    • adj.
      形容詞
    • 1. belonging to or characteristic of a past historical time, especially in style or design:

      an attractive and beautifully modernized period house

      a splendid selection of period furniture

    • n. the period between infection with a virus or other microorganism and the onset of symptoms, or between exposure to radiation and the appearance of a cancer.

    Powered by Oxford Dictionary of English 3e

    • n. the period over which eggs, cells, etc. are incubated.

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    • n. the period between infection with a virus or other microorganism and the onset of symptoms, or between exposure to radiation and the appearance of a cancer.

    Powered by New Oxford American Dictionary

    • n. the period over which eggs, cells, etc. are incubated.

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    • n. the length of time required for an investment to recover its initial outlay in terms of profits or savings:

    • if insulation costs $110 and saves $55 a year, its payback period would be two years

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    • n. a television or film production set in a particular historical period and characterized by the use of costumes, sets, and props that are typical or evocative of the era:

    • he wrote and directed the period drama Barry Lyndon, set 15 years before the beginning of the Napoleonic Wars

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    • n. the period of revolution of one body about another with respect to the distant stars.

    Powered by Oxford Dictionary of English 3e

    • n. a period in the earth's history when polar and mountain ice sheets were unusually extensive across the earth's surface.

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    • 更多解釋
    • IPA[ˈpirēəd]

    美式

    • n.
      a length or portion of time:
    • he had long periods of depression

      the period 1977–85

    • adj.
      belonging to or characteristic of a past historical time, especially in style or design:
    • a splendid selection of period furniture

    Powered by New Oxford American Dictionary

  2. 知識+

    • The morning passing period

      ...學生就會轉往另一個教室上課程B. 而換教室的緩衝時間叫 passing period, 應該像台灣學校的 "下課10分鐘 (或20分鐘)的時間". 可參考下列網址...

    • period的用法

      ...才 我看了一陣子 基本上是沒啥不同 只是 over a 20-year period , over a period of 20 years 這二個比較會在強調20...20年的時間做這個研究 <=用over a 20-year period或over a period of 20 years 會比over 20 years...

    • Period

      ... bet the basal body temperature on Oct 8-9 indicates the ovulation period. Therefore, if your normal cycle spans 28 days, ...