First, I'll explain the rules of the game.

首先我要说明一下游戏规则。

《牛津词典》

She hastened to explain the situation.

她赶忙解释这个情况。

《新英汉大辞典》

You explain the pros and cons of various attitudes or opinions, but you don't side definitely with any one of them.

你解释各种态度或观点的利与弊，但你没有明确地站在其中任何一方。

youdao

It would be impossible to explain the entire debate, so we will just tell a few stories about some great artists.

VOA: special.2010.04.14

Scholars have proposed three possible models to explain the formation of Israel. The first is an immigration model.

学者们提出了三种可能的模型,来解释以色列的形成，第一种是移民模式。

耶鲁公开课 - 旧约导论课程节选

Could you explain the difference you saw between your university in your hometown and here?

你能解释一下你看到的你家乡的大学和这里的大学的区别吗？

做交换生来到这里 - SpeakingMax英语口语达人

Then they explain the bizarre name of the company, just in case the customer is confused.

FORBES: The Profit Givers

Spend the night at the bottom of the Grand Canyon with an astronomer who can explain the stars.

BBC: The bloom of cancer

How else to explain the endless Treasury rally and the full-scale retreat from equities?

FORBES: Price Before Volume, Horse Before Cart