upstream是什么意思？

upstream

英[ˌʌpˈstri:m] 美[ˈʌpˈstrim]

• adj. 向上游的，逆流而上的，（石油工业等）上游的；
• adv. 向上游，逆流地；
• n. 上游部门；

例句

• We swam upstream against the current. 我们逆流向上游游去。
• The ice blocks up the river, making the upstream water unable to flow. 冰把河道堵住了, 上游的水流不下来。
• A water vole swam vigorously upstream. 一只水鼠奋力向上游游去.
• Hyetographs are important in estimating stormflow hydrographs from upstream watersheds. 降雨历线资料为上游集水区推估洪水流量历线的重要依据.
• The explorers paddled their canoe cautiously upstream. 探险者们谨慎地把独木舟向上游划去.
• He swam quartering upstream, but still was swept downward rather faster than he had expected. 他向上游游去, 可是河水老是要把他往下游冲,流速比他想象的要快得多.
• Seawater invades for a distance of about 50 miles upstream. 海水浸入上游远至50英里.
• Straightening vanes are effective in reducing the upstream pipe - length requirement. 矫直的叶片对于减少上游直管的要求长度是有效的.
• The fish were madly pushing their way upstream to spawn. 鱼群为产卵而疯狂地向上游挤进.
• Cities upstream use the river to get rid of sewage. 上游的城市将污水排放到河里。

反义词

• adj.
  upstream的反义词之：向上游的;逆流地
  downstream,
• upstream的反义词之：其他释义
  downward,

柯林斯高阶英汉双解学习词典释义

• ADV
  逆流地；往上游；在上游
  Something that is moving upstream is moving towards the source of a river, from a point further down the river. Something that is upstream is towards the source of a river.
  例句
  The water rose high enough for them to continue upstream. 水位涨得够高了，他们可以继续向上游航行。 ...the river police, whose headquarters are just upstream of the Isle St Louis... 总部设在圣路易岛上游的水警

英汉词典释义

• adv.
  向上游(的);逆流(的)
  The ice blocks up the river, making the upstream water unable to flow. 冰把河道堵住了, 上游的水流不下来。 We swam upstream against the current. 我们逆流向上游游去。

英英词典释义

• Adjective
  1. in the direction against a stream's current
• Adverb
  1. toward the source or against the current
  2. against the current;
  "he swam upstream"

行业词典

• 体育： 逆水；
  法律： 上游；