沟渠

tián yě li gōu qú zòng héng

田野里沟渠纵横。

The fields are crisscrossed by irrigation canals and ditches.

wā gōu qú

挖沟渠

dig a ditch

jiàn zào guàn gài gōu qú

建造灌溉沟渠

build irrigation canals

jiàn zhè xiē gōu qú shì wèi le cóng jiàn zhù wù zhōng pái shuǐ

建这些沟渠是为了从建筑物中排水。

These ditches were constructed to channel water away from the buildings.