If water levels are high, walking in the river can be extremely difficult.

位很高，在河里步行会非常困难。

This is the Glacial Lake Missoula high water mark.

这是冰川湖米苏拉高位标。

Yeah, you gotta hike to see these high water marks.

是的，你必须徒步才能看到这些高位。

High water is not necessarily a bad thing.

位高不一定是件坏事。

A lot of high-water rescue vehicles prepositioned.

许多高位救援车也已就位。

Class IV Rapids all the way down when it's high water.

当位高的时候，就会出现四级急流。

Acqua alta is another Italian term related to our next story. It means high water.

“Acqua alta”是另一个与我们下新闻有关的意大利语词汇。这个词的意思是高位。

High water levels along four rivers triggered a landslide creating a barrier lake.

四条河流的高位引发了山体滑坡，形成堰塞湖。

His office was a casualty of the high waters.

他的办公室曾是高位的受害者。

Because of the high water, the river is shut down, said Zerbonia.

由于高位, 河流被迫关闭, 塞博纳说道。

High water and flooding events move that sediment, which in turn exposes bedrock to further erosion.

高位和洪会移动这些沉积物，反过来使基石暴露在外，进一步腐蚀。

Flooding in Venice, Italy, has hit its second-highest level ever, forcing tourists to wade through historic plazas.

意大利威尼斯的洪已经达到了史上第二高的位，迫使游客趟过历史广场。

Florida governor Rick Scott says people are trapped by high water in their homes and in cars.

佛罗里达州州长里克·史考特表示，民众被高位困在了自家房屋以及车里。

I've seen the creek high, like right up to the bottom of the bridge but nothing like this.

我见过溪涨到桥底的情况，但没见过位这么高的。

The Arkansas River has hit record levels, and submerged parts of Fort Smith, Arkansas, near the Oklahoma border.

阿肯色河位创新高，淹没阿肯色州史密斯堡部分地区，这里靠近俄克拉何马州边境。

This has been going on for 1,200 years but an Aqua Alta that hit last November was particularly damaging.

这种情况已经持续了1200，但去11“高位”袭击造成的破坏尤为严重。

Prominent terrain includes flat open plains, and there are abundance of rivers and lakes and there's a high water table.

乌克兰的突出地形包括平坦开阔的平原，还有大量的河流湖泊，导致其地下位高。

It didn't last though. The barriers are only set up to rise when the tide hits a very high level.

但这种情况并没能持续下去。只有当潮涨到很高的位时，防洪堤才会升起。

So, when the water is high, it flows around the end instead of washing away the top of the dam.

所以当位很高的时候，会绕着坝的末端流动，而不是冲走坝的顶部。

They're supposed to rise up to form a dam when acqua alta arrives keeping the Adriatic Sea from flooding Venice.

当“高位”到达时，防洪堤应该会上升形成一个大坝，防止威尼斯被淹没。