英语语法分析

In this paper, taxonomic characters and taxonomic system of dunlin subspecies were introduced. Moreover, Infraspecific taxonomy of dunlin in non-breeding period was epitomized.

本文介绍了黑腹滨鹬的亚种分类性状、分类修订以及亚种分类系统，并就非繁殖期的相关研究作了概述。

The problems of describing and classifying of infraspecific variation as both are nowadays one of the most challenging, and potentially one of most rewarding areas for further study.

种内变异的描述和分类已成为当前最有挑战性的问题和最值得探索的领域之一。