upstream from編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看upstream fromupstream from — 介系詞介系詞1. in a direction opposite to the flow of a river, toward the source1.介系詞釋義上游處in a direction opposite to the flow of a river, toward the source例句The cabin is located upstream from the waterfall.