discourse|discourses

关于环境保护的讨论持续了整整两个小时。

The ___discourse on environmental protection lasted for two full hours.

学术期刊上的论文对气候变化进行了深入的探讨。

The scholarly ___discourse on climate change in academic journals is highly detailed.

这本杂志包含了关于气候变化的长篇论述。

The magazine includes lengthy ___discourses on climate change.