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n (1)一段時間 (any length of time) [C]： a～of two days/years 兩天/年的時間;during a～of several months 幾個月期間;within a five-week～在五周時間內;a～of peace/recovery 一段和平/恢復時期;a long/short～of time 很長/短一段時間;for long/short～s 很長/短的時間;live for a～in Italy 在意大利生活一段時期;The students' lunch～is from twelve to one. 學生午飯時間從12點至1點。He suffered～s of bad health. 他經歷了幾段健康不佳的時期?！纪絫ime，interval，stretch;

(2) 1)時期(代) (particular stretch of time in the life of a person， nation or civilization) [C]： one's early～某人的早年時期;the prehistoric/post-war～史前/戰(zhàn)后時期;many important events in this～這一時期許多重要的事件;the～of Queen Victoria/the French Revolution 維多利亞女王/法國大革命時代;wear costumes belonging to that～穿屬于那個時代的服裝;〖同〗time，era，epoch，age; 2)(地質學)紀 (unit of geologic time， longer than epoch and shorter than an era) [C]： Devonian/Jurassic～泥盆/侏羅紀;

(3)一節(jié)課 ((at school) one of the parts that the day is divided into; lesson) [C]： a teaching～of 50 minutes 50分鐘的一節(jié)課;a～of English/history (an English～/a history～) 一節(jié)英語/歷史課;The school day is divided into 6～s. 學校一天有六節(jié)課。

(4) 1)月經，行經 (bleeding from the body of a woman that happens each month) [C]： have a～來月經;～pains 痛經;2)月經期 (time of this)： She always feels unwell at the start of her～. 她在經期開始時總感到不適。

(5) 1)句號 (punctuation mark “.”， put at the end of a sentence) [C] (AmE) (=full stop)： A～is used with most abbreviations. 大多數縮略語都使用句號。Use a～at the end of a statement. 在陳述句末尾用句號。2)(用于一句話末尾，強調該句結束) (added to the end of a statement to indicate its completeness)： That is impossible，～. 那是不可能的，我就說這些。

(6)完全句 (常指有多個從句的復合句) (complete sentence， esp one that has several clauses) [C](gram);

(7)(天文學)自(公)轉的周期 (time in which a body rotates once on its axis or a planet or satellite revolves once about its primary) [C]： the～of rotation/revolution 自/公轉周期;

adj 某個特定歷史時期的 (指家具、服裝、建筑等)((of furniture， costumes， buildings， etc) belonging to a certain historical age or time) [作attrib]：～dress/furniture/houses/book 某個特定歷史時期的服裝/家具/房屋/書;～piece (infml)過時的人或物;

→?peri′odic adj 周期(性)的;?peri′odical n 期刊，定期出版物;adj 定期出版的;?peri′odically adv周期(性)地;

【辨異】period與age、era 和epoch 的區(qū)別見AGE。