jì / shù / rén / yuán / zhèng / zài / yán / jiū / rú / hé / gǎi / jìn / qí / guàn / xì / tǒng / tí / gāo / guàn / gài / xiào / lǜ

技术人员正在研究如何改进畦灌系统，提高灌溉效率。

The technicians are studying how to improve the border irrigation system and increase irrigation efficiency.