Traveling upriver exhausts them so much, they can not make the return journey.

逆流而上的旅程耗尽了它们的体力，因此它们无法再踏上归程。

Dams and irrigation projects upriver in Africa increase the population of malarial mosquitoes downriver.

而非洲河流上游处实施的水坝和灌溉工程增加了下游地区携带疟疾的蚊子。

Elephants go underneath, and we've even engineered salmon cannons to help fish sail past dams on their way upriver.

大象则走地下，我们已经设计了 “三文鱼发射器” 来帮助鱼类越过大坝去往上游。

When there was wind, they sailed the boat upriver against the Missouri's currents.

刮风时，他们逆着密苏里河逆流而上。

Head just upriver to the Samseong-dong, whose exclusive boutiques and wide boulevards have made it the Beverly Hills of Seoul.

沿着汉江上游前往三成洞，时尚的精品店与宽敞的林荫大道 让这个地方成了首尔的比佛利山庄。

Just upriver, at the Houses of Parliament, Big Ben's reassuring chimes peal across the city every hour, on the hour.

就在上游，国会大厦那，大笨钟抚慰人心的钟声每小时准点响彻伦敦城。

After a while a man came out of the cane upriver and paused and stood.

过了一会儿， 一个人从上游的藤条里走出来， 停下来站着。

Then they crossed over, drifted far off their course, pulled the raft upriver on the opposite bank.

然后他们越过河，漂离了他们的航向，将木筏拉到对岸的上游。

He headed upriver to seek refuge in the water.

他逆流而上，到水中避难。

They followed them upriver deep into the jungle to a lagoon that thundered with the sound of flapping fish.

他们跟着他们逆流而上，深入丛林，来到一个泻湖，那里发出鱼儿拍打的声音。

The trip upriver takes you by natural beauty and seemingly ancient scenes interrupted only by modern cruise boats.

逆流而上的旅程将带您领略自然美景和看似古老的景色，只有现代游船才能打断您的视线。

Just upriver from the Citadella is Budapest's oldest area, The Castle District, which is filled with medieval, baroque and 19th century buildings.

从兹塔德拉往上游走，即可到达布达佩斯历史最悠久的城堡区，区内充满中世纪时期巴洛克风格和19世纪建筑。

They built their longboats to be multi-purpose – they could travel upriver and  land on beaches and traverse rough oceans.

他们建造的长艇是多用途的——它们可以逆流而上，在海滩上登陆，也可以穿越波涛汹涌的海洋。

In the late 1980s Richard Hoskins, young and newly married, spent six years as a missionary in Bolobo, upriver from the Congolese capital, Kinshasa.

在二十世纪八十年代早期，年轻且新婚不久的理查德·霍斯金斯，在博洛博（地名）做了六年的传教士，该地位于刚果首都，金沙萨市的上游。

In a daze he walked on, up the path by the bank, upriver, listened to the current, listened to the rumbling hunger in his body.

他迷迷糊糊地继续往前走，沿着河岸边的小路往上游走，听着水流，听着他体内隆隆作响的饥饿感。

Those vessels made it possible for  the Vikings to strike just about anywhere there was a moving body of water, and they could easily  take their boats upriver and attack inland towns.

这些船只使维京人可以攻击任何有流动水体的地方，他们可以轻松地将船只开往上游并攻击内陆城镇。

I followed it upriver and was led by, actually, the shaman's apprentice to the most sacred site on the river. And this is what's bizarre -- It starts off as a cold stream.

在这位萨满大师徒弟的带领下，我沿河而上， 去往这条河最神圣的地点。 奇妙的事情发生了， 这条河的起点是冷流。