●英语中，this time 有两种含义：1. 这一次；2. 这段时间。当跟during连用时，因为during 表示一个时间跨度，所以during this time 表示：在此期间；在这段时间内；在这段时间里。3个说法意思相同。

During this time, they are called undergraduate students.

在此期间, 他们被称为大学本科生。

During this time Owen did his best to convert the other men to his views.

在这段时间里,欧文尽力想使别人接受他的看法。

During this time, her parents took her to Italy to explore the country's many cultural treasures.

在此期间，她的父母带她到了意大利，去了解这个国家的许多文化宝藏。

Avoid discussing work with colleagues during this time.

避免在这个时候和同事聊工作的事。

During this time, they will give five performances. 

在此期间,他们将演出五场。

●time变成复数(times)仍然可以表示：1. “次数”（多次）；2. 也可以表示“历史上或人生中某段时间”。You use “times” to talk about a particular period in history or in your life.

They were hard times and his parents had been struggling to raise their family.

那是段艰苦时期，他父母一直艰辛地养家糊口。

We'll be alone together, quite like old times.

我们会单独在一起，就像过去那样。

We are in one of the most severe recessions in modern times.

我们正在经历现代最严重的一段经济衰退。

Truth is so obscure in these times, and falsehood so established.

目前的时代,真理是那样晦暗不明, 谎言又是那样根深蒂固。

I thanked them for sticking with us during these bad times.

我感谢他们在这些困难的时期和我们同心同德。

During these times, Emerson had trouble organizing his thoughts effectively.
在这些时候，爱默生很难有效地组织他的思想。
The exhibition includes works of some of the most outstanding artists and their visual expressions created during these times.
展览融汇了诸多艺术大家的杰作以及他们在这一时代的视觉表达艺术。
● 可以说：during this time, during these times, during those times ，但不可以说：during this times。这个词组的错误在于，复数的times 不能用this 作定语。