Those that make it upstream develop into opaque elvers.

那些成功抵达游的鱼变成了不透明的鳗鱼。

So, officials said the pollution was likely coming from wastewater upstream.

所以，官员们表示，污染可能来自游的废水。

Ethiopia is working on a huge dam to contain water upstream.

埃塞俄比亚正在修建一座巨型大坝，以控制游的水。

They knew that the stream would be better to drink farther up, away from the beach.

他们知道最游的溪水，远离海滩。

Within a basin, the water upstream may be useful for irrigation, industrial or domestic use.

在一个盆地之内，河流游的水也许可以用于灌溉、工业以及家庭动。

One is Iranian-backed. The other theater that's opening up is the upper Tigris River Valley.

其中一个是伊朗支持的战斗。另一个是底格里斯河游的战场。

Predators like the smallmouth bass have caused problems for the upper river's environment.

像小嘴鲈鱼这样的掠经给科罗拉多河游的环境造成了问题。

In their upper reaches, mountain streams are full of energy.

游地段的山涧充满力。

Salmon and the river ecosystem have become threatened by a host of problems originating far up river.

三文鱼和河流生态系统经受到来自河流游的一系列问题的威胁。

The reservation is also downriver from a former General Motors factory that is now a Superfund site.

更糟糕的是，保留地游的通用汽车工厂旧址经变成了超级基金污染场址。

Wayne Pullan is the bureau's director for the upper basin.

韦恩·普兰是该局游盆地的局长。

The problems start further up the river.

问题开始于河流的游。

But behind the scenes in an online game, this is what it looks like.

但是每一个网游戏的幕后，看起来却是这样的。

You can think about it further up the stream at the eardrum.

你可以想一下在耳膜的游。

Yes. And there was a big party in the street.

是的。街道游一场盛大的派对。

Now, upstream, the water is flowing pretty slowly.

在游，河水的流速比较慢。

Agencies spend millions of dollars each year to keep invasive species under control in the upper part of the river.

各机构每年花费数百万美元来控制河流游的入侵物种。

Climate change is partly to blame, but also dams upstream on the Mekong River that choke the flow of freshwater.

气候变化是部分原因，但湄公河游的大坝也阻遏了淡水的流动。

Race to the Top had good goals, but poor implementation.

“力争游”计划的目标很，但是实施很糟。

I mean, it's the biggest deal we've seen in upstream US oil and gas in decades.

这是几十年来我们在美国油气游看到的最大一笔交易。