down·stream /ˈdaʊnˈstrim/
(ad.)下游地(a.)下游的
down·stream /ˌdaʊnˈstrɪm/ 副詞 形容詞
下游區
Down·stream adv. Down the stream; as, floating downstream.
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downstream
adj : in the direction of a stream's current [ant: upstream]
adv : away from the source or with the current [syn: downriver]
[ant: upriver, upriver]