I think at the beginning of each book a brief introduction to it is necessary.

我认为每本书开头的简短介绍都是很有必要的。

youdao

Beginning with a brief tour of the filesystem, we take you deep into the dot (.) of your directory listing so you can get the most from your CLI.

从简单浏览文件系统开始，我们带您深入讨论目录列表中的点(.) ，这样您就能够最大限度地利用命令行界面了。

youdao

A brief night-time stop at Jekaterinburg marked the beginning of Siberia.

在捷卡特琳堡的一次短暂夜间停车标志着西伯利亚旅程的开始。

youdao

The intense international scrutiny may have moderated the response of the security forces for a brief period at the beginning of the riots in Tibet in March.

ECONOMIST: The Beijing Olympics

The federation said the flow of residential approvals during the second quarter of 2011 "resumed its negative trend" in the UK as a whole, after a brief pick-up at the beginning of the year.

BBC: Slump in planning approvals for new Scottish homes

From the beginning this body's brief was to put human water consumption second to the rivers' environmental health.

ECONOMIST: Australia's water war