1. The crux of the matter is whether we can afford this project.
问题的关键在于我们是否负担得起这个项目。

2. We need to get to the crux of the matter as soon as possible.
我们需要尽快触及问题的核心。

3. Understanding the crux of the matter will help us solve it.
理解问题的关键将有助于我们解决它。

A: What is the crux of the matter in this dispute?
A：这场争端的关键点在哪里？

B: The crux of the matter is the disagreement over the contract terms.
B：问题的核心是对合同条款的异议。

1) 问题的核心

2) 关键点

3) 事物的本质

1. 问题的关键，事物的核心

e.g. The crux of the matter is the lack of funding.
问题的关键在于缺乏资金。

idiom

1. the most important or decisive part of a situation or problem

Synonym: heart of the matter, core of the issue