Hurry up so we can start lesson.

快一点，我们要开始上课了。

youdao

It always takes the class a while to settle down at the start of the lesson.

那个班一上课总得过一会儿才能安静下来。

《牛津词典》

Wait until the children have settled down before you start your lesson.

等孩子安静下来你再开始上课。

《新英汉大辞典》

And as I'm going to do many times in 3.091, I'm going to start a unit like this with a history lesson.

在3。091这门课上我会重复很多次，我会像现在一样以一个历史的故事,来开始新的一单元。

麻省理工公开课 - 固态化学导论课程节选

But bad things will start to happen if I don't mind this lesson of indexing.

但是坏事情将发生,如果我不注意索引的教训。

哈佛公开课 - 计算机科学课程节选

She stared back at him with the neutral innocence of a child waiting obediently for the start of a piano lesson.

NEWYORKER: The Valetudinarian

Let me start by conveying a critical lesson I learned from the mobile device wars.

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