upstream
柯林斯词典
1. ADV Something that is moving upstream is moving towards the source of a river against the current, from a point further down the river. Something that is upstream is towards the source of a river. 向上游
Salmon manage to swim upstream to lay their eggs. 三文鱼设法游到上游产卵。
...the river police, whose headquarters are just upstream of the Isle St Louis. …总部就设在圣路易斯岛上游的水警。
2. ADJ Upstream is also an adjective. 上游的[ADJ n]
We'll go to the upstream side of that big rock. 我们将去那块大岩石的上游一侧。
返回 upstream
upstream /ˈʌpˈstriːm/
剑桥词典
- (moving ) on a river or stream towards its origin
在上游（地）；向上游（地）；逆流（地）
Salmon swim upstream against very strong currents to reach their breeding areas . 大麻哈鱼会迎着湍急的水流游向上游它们的产卵区。
relating to an earlier stage in a process or series of events
在（某过程或事件的）前阶段
The company's upstream business includes oil exploration and production . 这家公司的上游业务包括石油勘探和开采。