noun
downstream; lower reaches of a river
Refers to the part of a river closer to the mouth, or the direction toward it. Often used in contrast with 上流 (upstream).
この川の下流には大きな町がある。
There is a large town downstream on this river.
工場の排水が下流の水
Factory wastewater affected the water quality downstream.
noun
lower classes; lower strata of society
Figurative use referring to people or groups in the lower social or economic tiers. Antonym: 上流 (upper classes).
Antonyms: 上流
彼は下流の出身から成功を収めた。
He achieved success despite coming from a lower-class background.