age, epoch, era, period, times

名詞 period:

1. an amount of time
   同義詞：time period, period of time
2. one of three periods of play in hockey games
3. a stage in the history of a culture having a definable place in space and time
   同義詞：historic period, historical period
4. the interval taken to complete one cycle of a regularly repeating phenomenon
5. the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause--Aristotle
   同義詞：menstruation, menses, menstruum, catamenia, flow
6. a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations
   同義詞：point, full stop, stop, full point
7. a unit of geological time during which a system of rocks formed
   同義詞：geological period
8. the end or completion of something

1. Last year was a prolific period in the composer's life.
   去年是作曲家一生中創(chuàng)作豐收的時(shí)期。
2. He was on his feet again after such a long period in hospital.
   住院很長一段時(shí)間他復(fù)原了。
3. It was a period of innovation.
   這是革新時(shí)期。
4. She'll be away for an indefinite period.
   她將離開一段時(shí)間，何時(shí)回來未定。
5. She has a detailed knowledge of this period.
   她對這段時(shí)期的情況了解地相當(dāng)詳細(xì)。
6. He was taken on for a three-month trial period before being accepted as a permanent member of staff.
   在她被接受為固定雇員之前經(jīng)過了三個月的試用期。
7. Which period of history are you studying?
   你正在學(xué)哪一段歷史？
8. We have three periods of chemistry a week.
   我們一星期三節(jié)化學(xué)課。

pe.ri.od

n.Abbr. per.（名詞）縮寫 per.
An interval of time characterized by the occurrence of a certain condition, event, or phenomenon:
期間，一段時(shí)間：以某特定條件、事件或現(xiàn)象的發(fā)生為特征的時(shí)間間歇：
例句：
a period of economic prosperity.
經(jīng)濟(jì)繁榮時(shí)期

An interval of time characterized by the prevalence of a specified culture, ideology, or technology:
時(shí)期：以某特定文化、思想或技術(shù)的盛行為特征的一段時(shí)間：
例句：
artifacts of the pre-Columbian period.
前哥倫比亞時(shí)代的手工制品

An interval regarded as a distinct evolutionary or developmental phase:
…期：時(shí)代或發(fā)展的特定時(shí)期：
例句：
Picasso`s early career is divided into his blue period and rose period.
畢加索的早期生涯被分為憂郁期和得意時(shí)期

Geology A unit of time, longer than an epoch and shorter than an era.
【地質(zhì)學(xué)】 紀(jì)：比世長比代短的時(shí)間單位
Any of various arbitrary units of time, especially:
時(shí)間單位：指任何任意性時(shí)間單位，尤指：
Any of the divisions of the academic day.
一節(jié)課：學(xué)校學(xué)習(xí)日的劃分
Sports Games A division of the playing time of a game.
【體育運(yùn)動】 【游戲】 分場：比賽時(shí)間的劃分
Physics Astronomy The time interval between two successive occurrences of a recurrent event or phases of an event; a cycle.
【物理學(xué)】 【天文學(xué)】 周期：兩個連續(xù)出現(xiàn)或反復(fù)出現(xiàn)的現(xiàn)象或事件間的時(shí)間間隔；周期循環(huán)
An instance or occurrence of menstruation.
經(jīng)期：月經(jīng)的例子或出現(xiàn)
A point or portion of time at which something is ended; a completion or conclusion.
完結(jié)：某事結(jié)束的時(shí)間點(diǎn)或時(shí)間段；完成或終結(jié)
The full pause at the end of a spoken sentence.
結(jié)尾：句末的停頓
A punctuation mark ( . ) indicating a full stop, placed at the end of declarative sentences and other statements thought to be complete, and after many abbreviations.
句號：一種表示完全停頓的標(biāo)點(diǎn)符號（。），放在句末或認(rèn)為將會完成的闡述后及許多縮略式后
A sentence of several carefully balanced clauses in formal writing.
復(fù)合句：正式文體中包括若干從句的結(jié)構(gòu)勻稱的句子

A metrical unit of quantitative verse consisting of two or more cola.
定量測量單位：包括兩個或兩個以上音行的定量韻律的度量單位
An analogous unit or division of classical Greek or Latin prose.
詩文的劃分：古希臘或拉丁散文中類似的分段
Music A group of two or more phrases within a composition, made up of 8 or ' measures and terminating with a cadence.
【音樂】 （音樂）分段：音樂作品中含兩個或兩個以上樂章的組曲，由八或十六音位組成并以和弦結(jié)尾
Mathematics
【數(shù)學(xué)】
The least interval in the range of the independent variable of a periodic function of a real variable in which all possible values of the dependent variable are assumed.
小數(shù)點(diǎn)：周期函數(shù)自變量變化的最小區(qū)間，其中從屬變量的所有可能值都已事先確定
A group of digits separated by commas in a written number.
數(shù)字：書面數(shù)字中一個中間用逗號隔開的數(shù)字組
The number of digits that repeat in a repeating decimal. For example, !/7 = 0.4285742857 . . . has a six-digit period.
分節(jié)：循環(huán)小數(shù)中的循環(huán)位數(shù)。如!/7=0.4285742857…，有'個數(shù)的循環(huán)位
Chemistry A sequence of elements arranged in order of increasing atomic number and forming one of the horizontal rows in the periodic table.
【化學(xué)】 元素周期：一系列元素按原子序數(shù)升序排列形成的周期表中的一個橫排
adj.（形容詞）
Of, belonging to, or representing a certain historical age or time:
某時(shí)期的：屬于、包含于或代表某特定歷史時(shí)期的：
例句：
a period piece; period furniture.
時(shí)代樂章；屬于某時(shí)代的家俱

來源：
Middle English periode
中古英語 periode
from Old French
源自 古法語
from Medieval Latin periodus
源自 中世紀(jì)拉丁語 periodus
from Latin perihodos [rhetorical period]
源自 拉丁語 perihodos [修辭部分]
from Greek periodos [circuit]
源自 希臘語 periodos [馬戲團(tuán)]
peri- [peri-]
peri- [前綴，表.周圍.]
hodos [way]
hodos [方式]

<參考詞匯><同義詞>period,epoch,era,age,termThese nouns refer to a portion or length of time.
這些名詞均指時(shí)間的一部分或長度。
Period is the most general:
Period 是最普遍的：
例句：
a short waiting period;
等了一小會兒；

例句：
one of the most difficult periods of her life;
她生命中最困難的時(shí)期；

例句：
worked for a period of ten years;
工作了十年時(shí)間；

例句：
the Romantic period in music.
音樂中的浪漫部分。

Epoch refers to a period regarded as being remarkable or memorable:
Epoch 指值得記憶的或美好的時(shí)光：
例句：
.We enter on an epoch of constitutional retrogression. (John R. Green).Anera is a period of time notable because of new or different aspects or events:
我們進(jìn)入了立憲的衰退階段 （約翰·R·格林）。Era 常指因新或不同的方面或事件而值得注意的一段時(shí)間：

例句：
.How many a man has dated a new era in his life from the reading of a book. (Henry David Thoreau).Anage is usually a period marked by a particular distinctive characteristic:
有多少人由于讀一本書而開始一個新生活的歷程 （亨利·戴維·梭羅）。Age 是以特別突出的特點(diǎn)為標(biāo)志的時(shí)期：

例句：
the age of Newton;
牛頓時(shí)代；

例句：
the Iron Age.
鐵器時(shí)代。

例句：
.These principles form the bright constellation which has . . . guided our steps through an age of revolution and reformation. (Thomas Jefferson). Aterm is a period of time to which limits have been set:
這些規(guī)定構(gòu)成了燦爛星座…指引我們通過變革與革命時(shí)代的腳步 （湯姆斯·杰斐遜）。Term 指有限定的一段時(shí)間：

例句：
Senators are elected for a term of six years.
參議員任期六年

<注釋>Perhaps more than once one may have wonderedwhy the wordperiod has the sense .punctuation mark ( . ). as well as some of its other senses having to do with time.The answer to this question lies in the senses of the Greek wordperiodos from which our word is descended. Periodos, made up of peri-, .around,. and hodos, .way,. meant such things as .going round, way round, going round in a circle, circuit,.and with regard to time .cycle or period of time..The word also meant .the period of menstruation..In rhetoric it referred to .a group of words organically related in grammar and sense..The Greek word was adopted into Latin asperihodos with only its rhetorical sense and one other sense,but in Medieval Latin it reacquired senses it had in Greek,such as .cycle,. and acquired a new sense,.a punctuation mark used at the end of a rhetorical period..Although this sense is recorded in Medieval Latin,it is not recorded in English until '09.But the wordperiod had entered Middle English from Medieval Latin and Old French, first being recorded in a work written around 425in the sense .a cycle of recurrence of a disease..
或許任何人都會不止一次的發(fā)出疑問，為什么period 有.標(biāo)點(diǎn)符號（。）.的意思， 同時(shí)其它意思與時(shí)間有關(guān)。此問的答案來自我們的單詞源自的希臘語單詞periodos 的意思。 Periodos ，由意為.周圍.的 peri- 和意為.方式.的 hodos 組成， 該詞意味著.圍繞…走，圍繞…的路，轉(zhuǎn)圈走，圍繞，.同時(shí)也指時(shí)間，意為.一段時(shí)間或時(shí)間周期.。此詞也意為.經(jīng)期.。在修辭學(xué)中指.一組在語法和詞意上有機(jī)相連的詞。.這個希臘詞作為perihodos 被拉丁文所采用， 僅帶有修辭和一個其他的意思，但在中世紀(jì)拉丁語中它重新得到了它在希臘語中的意思，例如.周期.，后來又得到一個新的意思，即.用于修辭部分末尾的標(biāo)點(diǎn)符號.。盡管此意在中世紀(jì)拉丁語中有記載，但直到'09年才在英語中有記載。而period 從中世紀(jì)拉丁文和古法語中進(jìn)入中世紀(jì)英語， 并首次記載于約425年所著的作品中，意為.疾病發(fā)作的周期.