If you have to cover 12 chapters in American history, begin by planning on three two-hour reviews with four chapters per session.

如果你必须涵盖美国史的12个章节，首先计划3次2小时的复习，每次4章。

《柯林斯英汉双解大词典》

The first four chapters introduce open source.

前四个章节介绍了开放源码。

youdao

The professor assigned four chapters for this week.

教授指定了四章作为本周的作业。

youdao

Why do you have four different chapters of this book, all telling the same story?

为什么一本书要有四个不同的章节，来讲述同一个故事？

耶鲁公开课 - 新约课程节选

The Unfinished Swan has four chapters, and the white-room-black-paint chapter is only the first.

FORBES: Forget First Person Shooters. Try 'The Unfinished Swan,' a First Person Painter

Autonomy takes up the first four chapters, and non-philosophers will probably find this hard going.

ECONOMIST: Bioethics

In the last four chapters she gets down to cases.

ECONOMIST: Bioethics