upstream

US /ˈʌpˈstrim/

UK /ˌʌpˈstri:m/

B2 中高級
adv.副詞向上地
They lived upstream from the factory

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通往未來的橋樑 (Bridges to the Future | Highlights)

06:05通往未來的橋樑 (Bridges to the Future | Highlights)