1.In expository prose, paragraphs can (and should) be neat and utilitarian.

写说明文的，落可以（并且应该是）简洁实用。

2.It's only a single sentence long, and expository paragraphs almost never consist of a single sentence.

这话一句，陈述解释性的落几乎绝一个句子构成。

3.The ideal expository graf contains a topic sentence followed by others which explain or amplify the first.

理想的说明落应该以概括性句子起头，接下去的句子解释或者详述第一句的内容。

4.This article is a piece of expository writing.

这篇文章是一篇说明文。机翻