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in the PONS Dictionary

I. up·stream [ʌpˈstri:m] ADJ

1. upstream (of river):

the upstream part of the river
der obere Teil des Flusses
upstream pollution
Verschmutzung f im oberen Flusslauf

2. upstream fig:

upstream process
vorgeschaltet
upstream stage
früher
upstream stage
vorausgehend

II. up·stream [ʌpˈstri:m] ADV

upstream move, paddle, swim:

upstream
flussaufwärts
upstream
stromaufwärts
they live eight kilometres upstream from Amsterdam
sie wohnen acht Kilometer flussaufwärts von Amsterdam
factories situated upstream
am oberen Flusslauf gelegene Fabriken
to swim upstream
gegen den Strom schwimmen

congestion running upstream TRAFF FLOW

congestion running upstream
wachsender Rückstau

running upstream, congestion TRAFF FLOW

running upstream, congestion
wachsender Rückstau