All historical rates are stored by period and actuality, which means that you can go back to an old period and locate the exact values that were used during the currency conversion.

所有历史汇率都按期间和现状存储，这意味着您可以追溯到一个较早的期间并定位货币转换过程中使用的确切值。

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Learner taxi drivers are tested several times during their training period by government officers.

见习的士司机在训练期间会接受政府人员的多次测试。

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The period of maturation is determined by the cellar master.

酿熟期由地窖的主人决定。

《柯林斯英汉双解大词典》

But this home contains over 2,000 pieces of art organized from room to room by period and by geography.

VOA: special.2009.01.11

And it turns out that simply by counting the number of those spikes that occurs at a period of time.

随后，只要数一数在一定时间内,产生的尖峰脉冲的数量。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

Some of the sites that are said to be destroyed by Joshua and the Israelites weren't even occupied in this period, ; the late Bronze Age, beginning of the Iron Age; the Iron Age begins around 1200.

据说一些遗址已被破坏,被约书亚，以色列在那时还未被攻占，在铜器时代晚期，铁器时代的初始;,接触器时代自1200年左右开始。

耶鲁公开课 - 旧约导论课程节选

So, while chronic stress is always bad for you, a short period of mild stress followed by a period of recovery can be good.

ECONOMIST: How to live longer��maybe

It says it expects that "a period of subdued economic recovery in the UK will be accompanied by a period of modest growth in our market, and that this will be sustained for several years".

BBC: Lloyds: Privatising at a profit looks far away

The Victorian exhibition is organized by the period's main themes-mythological and classical subjects, landscapes and modern scenes.

FORBES: Eminent Victorians