transcription, транскрипция: [ daʊnstri:m ]
Something that is moving downstream is moving towards the mouth of a river, from a point further up the river. Something that is downstream is further towards the mouth of a river than where you are.
We had drifted downstream.
≠ upstream
ADV : ADV after v , be ADV , n ADV , oft ADV of/from n
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Downstream is also an adjective.
Breaking the dam could submerge downstream cities such as Wuhan.
≠ upstream
ADJ : ADJ n