音标：['piәriәd]
n. 时期, 节段, 节, 句点, 学时, 周期
a. 当时特有的, 过去某段时期的
interj. 就是这话, 就是这么回事
【化】 周期
【医】 期, 时期
【经】 时期, 期间, 周期
相关词组:
come to a period
put a period to sth
在线英汉词典
period的短语、例句：
period
n
1 length or portion of time 一段时间; 时期
a period of three years 三年的时间
He has had several long periods of work abroad. 他在国外长期工作过几次.
a period of peace, recovery, uncertainty 和平、 恢复、 不稳定时期
showers and sunny periods, eg in a weather forecast 阵雨间晴（如在天气预报所述）
The work must be completed within a two-month period. 工作须於两月内完成.
The incubation period (ie The delay between catching a disease and the symptoms appearing) is two weeks. 该疾病的潜伏期为两星期.
2
(a) portion of time in the life of a person, nation or civilization （人、 国家、 文明的）时期, 时代
a painting belonging to the artist´s early period 该画家早期的画
the period of the French Revolution 法国大革命时期
the post-war period 战後时期
The house is 18th century and has furniture of the period, ie of the same century. 那房子是18世纪的, 而且还有那时代的家具.
The actors wore costumes of the period, ie of the time when the events of the play took place. 演员穿著剧中时代的服装.
[usu attrib 通常作定语]
period dress, furniture, etc 某时代的服装、 家具等
a period cottage, ie not modern 某时代的村舍.
(b) (geology 地质) portion of time in the development of the earth´s surface 纪
the Jurassic period 侏罗纪.
3 (time allowed for a) lesson in school （学校的）课, 课时, 学时
a teaching period of 45 minutes 45分钟的一堂课
a free period 没课的一节
three periods of geography a week 每周三节地理课.
4
(a) monthly flow of blood from the womb of a woman; menstruation 月经: have a period 来月经
[attrib 作定语]
period pains 月经痛.
(b) time of this 月经期.
5 (esp US)
(a) = full stop (full).
(b) sign of punctuation (.) marking this in writing and print 句号. =>App 3 见附录3.
(c) (infml 口) (added to the end of a statement to stress its completeness 加於一段话之後以强调完毕)
We can´t pay higher wages, period, ie that is final. 我们不能付再高的工资了, 话就说到这里.
6 (grammar) complete sentence, esp one having several clauses 完全句（尤指有几个分句者）.
7 (astronomy 天) time taken to complete one revolution 周期.
period