上游
上游[shàng yóu]1.■（河流接近发源地的部分） head waters; upstream; upper reaches:the upper reaches of the Yellow River黄河上游2.■（先进） advanced position:go all out and aim high [strive for the best];鼓足干劲， 力争上游One can always aim higher.上游无止境。上游国家 upstream state上游河段 upper reach上游水位 upper pond level; upstream water level; headwater level
