You need a lawyer to explain all the legalities of the contracts.

你需要律师来解释这些合同在法律上的各项细节。

《牛津词典》

I had met with him to explain the format of the programme and what we had in mind.

我已经同他见过面，解释了这个节目的程式和我们的想法。

《柯林斯英汉双解大词典》

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》

He was forty years old. Over the years,historians and medical experts have tried to explain the cause of Poe's death.

VOA: special.2009.02.02

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 how the cost of products are related to the cost of advertisements?

你能解释一下商品成本和广告成本的关系吗？

广告和价格的关系 - SpeakingMax英语口语达人

Andrew Lo, of MIT's Sloan School of Management, was fond of pointing out that in the physical sciences three laws can explain 99% of behaviour, whereas in finance 99 laws can explain at best 3% of behaviour.

ECONOMIST: Schumpeter

Some climate change "sceptics" claim that this process, rather than the burning of fossil fuels, can explain much of the Earth's recent rise in temperature.

BBC: Cloud simulator tests climate models

The Princeton economist Uwe Reinhardt in fact has a nice series of blog posts on this topic which explain some of the quirky factors that have led hospital prices to be so economically unjustifiable.

FORBES: Hospital Pricing and Irrational Thinking