The book opens with an explanation of why some drugs are banned.

本书在开篇阐述了禁用某些药物的原因。

《牛津词典》

The tutorial begins with an explanation of the RSS format and some actual feed samples.

本教程首先对 RSS 格式和一些实际的提要示例进行说明。

youdao

To clear this matter up, we'll present the secrets here with an explanation of their importance.

为了纠正这个问题，我们在讨论这些秘诀的同时会解释它们的重要性。

youdao

This demands an answer. The explanation begins with the apical bud.

VOA: special.2009.10.06

On their way out they left a note with an explanation and some cash.

FORBES: What Startup CEOs Look For When Hiring

If you send me an email with an explanation we can settle for less.

FORBES: Flirt With Strippers Online? An Italian Artist May Have Your Phone Number

So, Ms. Hutchens will start with an explanation of that case and move to the situation at hand.

FORBES: Does American Needle Case Apply To Collegiate Licensing?