D the materials that can be used in each period.

d每个课时中可以使用的材料。

youdao

B the grammar, expressions and new language patterns to be taught in each period.

b每课时要教授的语法、表达和新的句式。

youdao

So have I found that in each period of life a particular season assumes a special importance.

因此我发现，在生命的每一个阶段，一个特定的时期具有特别的重要性。

youdao

In fact, during this whole period playwrights were writing prologues to their plays abusing each other for being obscure that is to say, abusing each other for requiring interpretation.

事实上，当时,剧作家给别人的剧作写序言时,经常互相指责说对方的作品晦涩难懂,换言之，指责说对方的作品需要解读。

耶鲁公开课 - 文学理论导论课程节选

The style of warfare that emerges in this period, apparently for the first time, is what we call the hoplite phalanx and each half of that needs to be explained.

显然,这个时期第一次出现了,一种独特的战争形式,那就是重步兵方阵,我来给大家分别解释下这两个词

耶鲁公开课 - 古希腊历史简介课程节选

John Tavares, Colin McDonald and Grabner gave New York leads in each period.

WSJ: Orpik's OT goal sends Penguins to 2nd round

The team identified a clear and significant association between investments in human capital in each period and a country's subsequent growth and labour productivity.

ECONOMIST: A breakthrough in measuring the knowledge economy

A123 said that during a ten trading day period five months following the initial closing date of the transaction and during another ten day period six months following the close, it has the right to require the investors to buy in each such period up to an additional 6, 250, 000 shares for an aggregate of up to 12.5 million additional shares.

FORBES: A123 Slides; Raising $25.4M In Below-Market Stock Deal