“上游”的拼音？

这些障碍物对于想要往上游游动的鱼儿来说是致命的。The barriers are lethal to fish trying to swim upstream.他在那里有一栋房子，但在河上游几英里处。He has a house down there but it's miles up river.上游的城市将污水排放到河里。Cities upstream use the river to get rid of sewage....

“上游”的英语可以翻译为：head waters，upstream，upper reaches，advanced position ...

“上游”的反义词：下游。...