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a particular length of time 一段时间；时期 a long/an extended period 很长/很长的时间 a short/brief period 短暂的时期 - period of something
a period of transition/uncertainty/expansion 过渡期/不确定期/扩张期 a period of two years/six months/four weeks 两年/六个月/四周的时间 a two-year/six-month/four-week period 两年/六个月/四周的时间 All these changes happened over a period of time. 所有这些变化都是在一段时间内发生的。 A year-to-year lease has no fixed time period. 年租没有固定的期限。 - for a period
The offer is available for a limited period only. 这一出价仅在有限的一段时间内有效。 This compares with a 4% increase for the same period last year. 这个数字与去年同期的 4% 升幅相近。 The project will run for a six-month trial period. 这个项目将试运行六个月。 - over a period
The hall will be closed over a 2-year period. 这个大厅将在两年内关闭。 - during a period
We know little of her life during that period. 我们对她那段时间的生活知之甚少。 The aim is to reduce traffic at peak periods. 目的是降低高峰时段的交通流量。 Tomorrow will be cold with sunny periods. 明天会很冷，会有晴天。
Extra ExamplesTopics Timea1Committee members will not be eligible for re-election within a period of two years. 委员会的成员在两年内没有资格再次参加竞选。 Eastern Europe entered a period of transition in the 1990s. 东欧在 20 世纪 90 年代进入一个过渡时期。 Public spending was cut during his period of office. 他任职期间削减了公共开支。 Sales have gone up in the last-five-year period. 在过去的 5 年中销售额呈上升趋势。 The balance must be paid within an agreed period of time. 余款必须在约定的时间内付清。 The film spans a period of 40 years of Castro's rule. 影片的时间跨度贯穿了卡斯特罗 40 年的执政岁月。 The medication is prescribed for a fixed period of time. 开的药只适合在固定的一段时间内服用。 The most formative period of life is childhood. 一生中对性格形成影响最大的时期是童年。 The period was marked by a succession of financial crises. 这一时期的特点是金融危机此起彼伏。 The view is that the government's honeymoon period is over. 看来政府的蜜月期已经结束。 There will be a reduced bus service over the Christmas period. 圣诞节期间公交车的班次将会减少。 Try breaking your period of study into 20-minute blocks. 试着把学习时间分成 20 分钟的小段。 We lived in Caracas for a brief period. 我们在加拉加斯小住过一段时间。 We visited five different cities within a two-day period. 我们在两天的时间内访问了 5 个不同的城市。 You can use the software free for a 30-day trial period. 你可以免费试用软件 30 天。 You have been paid for the full period of your employment with us. 你整个受雇期的酬金我们已经全部付清。 a critical period in the development of the project 项目进展的关键时期 a happy period in her life 她生命中的一段幸福时光 a period of transition between communist rule and democratic government 共产统治与民主政体之间的过渡时期 a period of transition from a totalitarian regime to democratic government 从极权主义政权转变为民主政府的过渡时期 after a long period of waiting 在漫长的等待之后 during the intervening period 在中间的一段时期 the period between his resigning and finding a new job 从他辞职到再找到工作之间的一段时间 the period from 1 July to 31 December 从7月1 日到12 月31 日期间 There are extra buses at peak periods. 高峰时段有多余的公交车。 There was a long period of uncertainty before we knew the final decision. 我们知道最终决定前，有很长时间事态并不明朗。
Oxford Collocations Dictionaryadjective- extended
- lengthy
- long
- …
- cover
- span
- begin
- …
- begin
- commence
- elapse
- …
- costume
- furniture
- after a period
- during the period
- throughout the period
- …
- the beginning of a period
- the start of a period
- the end of a period
- …
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a length of time in the life of a particular person or in the history of a particular country （人生或国家历史的）阶段，时期，时代 Which period of history would you most like to have lived in? 你最喜欢生活在哪一个历史时期？ This textbook covers the post-war period. 这一课本包含战后时期的历史。 The church dates from the Norman period. 这座教堂建于诺曼时期。 We are currently studying the early medieval period. 我们目前正在研究中世纪早期。 Like Picasso, she too had a blue period. 和毕加索一样，她也有过一段以蓝色为主调的创作时期。 Most teenagers go through a period of rebelling. 大多数青少年都要经历一段叛逆期。
Extra ExamplesTopics Historya1The picture was painted by Picasso during his blue period. 这幅画是毕加索消沉时期的作品。 the late Victorian period 维多利亚时代后期 the period covered by the book 该书涉及的时期 a dark period in the country's history 该国历史上的一段黑暗时期
Oxford Collocations Dictionaryadjective- extended
- lengthy
- long
- …
- cover
- span
- begin
- …
- begin
- commence
- elapse
- …
- costume
- furniture
- after a period
- during the period
- throughout the period
- …
- the beginning of a period
- the start of a period
- the end of a period
- …
- (
geology 地质学 a length of time which is a division of an era. A period is divided into epochs. 纪（地质年代，代下分纪，纪下分世） the Jurassic period 侏罗纪 Dinosaurs died out during the Cretaceous period. 恐龙在白垩纪灭绝了。
Oxford Collocations Dictionaryadjective- extended
- lengthy
- long
- …
- cover
- span
- begin
- …
- begin
- commence
- elapse
- …
- costume
- furniture
- after a period
- during the period
- throughout the period
- …
- the beginning of a period
- the start of a period
- the end of a period
- …
any of the parts that a day is divided into at a school, college, etc. for study 节；学时；课 ‘What do you have next period?’ ‘French.’ “你下一节是什么课？” “法语。” a free/study period (= for private study) 自习课
Extra ExamplesTopics Educationb2We've got French next period. 我们下节课上法语。 I have two free periods on Tuesday afternoons. 星期二下午我有两次空闲时间。
the flow of blood each month from the body of a woman who is not pregnant 月经；经期；例假 Extra ExamplesI was thirteen when I started my period. 我 13 岁初潮。 I have my period and don't feel too great. 我来月经了，感觉不太舒服。 Missing a period is often one of the first signs that a woman is pregnant. 月经没来往往是女人怀孕的最初几个征兆之一。
Oxford Collocations Dictionaryadjective- heavy
- light
- menstrual
- …
- have
- start
- miss
- …
- start
- stop
- last
- …
- cramps
- pains
- (North American English) (British English full stop)
the mark ( . ) used at the end of a sentence and in some abbreviations, for example e.g. 句点；句号
length of time时间长度
lesson课时
woman妇女
punctuation标点
Word Originlate Middle English (denoting the time during which something, especially a disease, runs its course): from Old French periode, via Latin from Greek periodos ‘orbit, recurrence, course’, from peri- ‘around’ + hodos ‘way, course’. The sense ‘portion of time’ dates from the early 17th cent.