When did you last have a period ?
你上一次月经是什么时候？
The novel is set in the Roman period.
该小说的背景是罗马时期。
Like Picasso, she too had a blue period.
和毕加索一样，她也有过一段消沉时期。
Earnings are averaged over the whole period.
所计算的是整个时期的平均收入。
The country is enjoying a period of peace and prosperity.
国家正值国泰民安、繁荣昌盛的时期。
Next term we'll be looking at the Second World War period.
下学期我们将研究一下二战时期。
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？
Brett is enjoying a honeymoon period with both press and public.
布雷特正在享受同媒体和公众的蜜月期。
The book does not purport to be a complete history of the period.
本书无意标榜为那个时期的全史。
They are a priceless record of a brief period in Colorado history.
它们是科罗拉多历史上一段短暂时期的宝贵记录。
This book deals with the social, economic and political issues of the period.
这本书论及了那个时期的社会、经济和政治问题。
那个阶段很美好。
I feel that that period in my life was extremely valuable.
我觉得，那段时期在我的人生中是非常宝贵的。
Because each period of life brings its own form of joy and challenge.
因为生命的每个阶段都有它自己的欢乐和挑战。
I couldn't have gone through that bitter period without your generous help.
如果没有你的慷慨相助，我熬不过那段艰苦时期。
Indeed, stability of the biological clock's period is one of its major features.
的确，生物钟周期的稳定性是它的主要特征之一。
Anaerobic exercise is a powerful burst of movement followed by a period of rest.
无氧运动是一种爆发型运动，运动完后需要休息一段时间。
This is not to suggest that the period of this biological clock is immutably fixed.
这并不是说生物钟的周期是固定不变的。
At some point, almost all of us will experience a period of radical professional change.
某种程度上，几乎所有人都会经历职业生涯的彻底变革期。
The period of engagement is the time between the marriage proposal and the wedding ceremony.
订婚期是指从求婚到举行婚礼之间的这段时间。
Many people say the purpose of the engagement period is to permit enough time to plan the wedding.
许多人说，订婚期的目的是为了腾出足够的时间来策划婚礼。
The characters were dressed in full period costume.
剧中人物全都身着具有时代特色的服装。
He built up the business over a period of ten years.
他用了十年时间把这个企业创建起来。
You can pay back the loan over a period of three years.
你可以在三年内分期归还贷款。
Helen described life in a weightless environment during her period in space.
海伦描述了她身处太空时失重状态下的生活。
Since its first period on Dec. 5, Letters Alive has been widely praised.
自12月5日播出第一集以来，《见字如面》这档节目收到广泛好评。
Upon registration, a trademark is usually granted for a period of ten years.
商标一经注册，其有效期通常为十年。
A flash mob is a group of people who come together suddenly in a public place, do something unusual for a short period of time, and then quickly break up.
快闪族，是指一群人突然在公共场所聚集，在短时间内做一些不寻常的事情，然后迅速散开。
如今，我们处在一个新的时代。
如今，我们处在一个新的时代。
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