在每个时间段的前期，不会正式地通知新的会议情况(开始或结束)。

There was no official announcement of new sessions starting/ending at the top of each hour.

youdao

一项更为简便的新着装规范开始实行，对许多法官而言，延续数百年在法庭上戴白色马尾假发的传统就此结束。

A centuries-old tradition of wearing a white horse-hair wig in court ended for many judges when a simpler new dress code came into force.

youdao

学校在寄给本校1000名学生的家长的信中对新着装政策做了解释。 这一规定将在暑假结束后开始生效。

The new clothing policy has been explained in a letter sent to parents of the school’s 1, 000 pupils and will come into force after the summer holiday.

youdao

OK. We wanted to finish up that section, we're now going to start on a new section, and I want to try and do one and a half things in the remaining time. I'm going to introduce one topic that we're going to deal with fairly quickly, and then we tackle the second topic, it's going to start today, and we're going to carry on.

我们该结束这一段了，现在我们要开始新的课程，我在接下来的时间里要做1。5件事情,我首先会很快的对一个我们,要学习的课题,进行一个介绍，然后再进入第二个话题，今天我们只是开始这个话题，以后还要继续讲。

麻省理工公开课 - 计算机科学及编程导论课程节选