It was frightening. The fastest evacuation route was through river rapids.

很吓人的。最快的疏散路线是河流的急流。

Clear air turbulence is generated by wind shear in the jet stream.

晴空湍流是由急流中的风切变产生的。

One of these schools is Forest Hills school district, near Grand Rapids, Michigan.

密歇根州大急流城附近的森林小丘校区采用的就是这种方法。

Here is the current that many people see is scary or causes them anxiety.

这就是引起很多人害怕和恐慌的急流。

Here it's the current that many people see is scary or causes them anxiety.

这是许多人所看到的令人恐惧或使他们焦虑的急流。

Crossing such a torrent poses a huge threat to a little one.

穿越这样的急流对小来说是一个巨大的威胁。

Firefighters here rescued a motorist stranded in rushing waters.

消防人员救出了一名被困在急流中的司机。

Away from these rapids, flat lizard populations are found in much smaller numbers.

在远离这些急流的地方，扁石蜥的要少得多。

There are advantages to life in the fast stream.

这些动物拥有在急流中生存的先天优势。

It roared well over its banks, rushing swiftly with tree limbs caught in the raging current.

它咆哮着冲上两岸，夹杂着被急流冲下的树枝，汹涌奔腾。

This is what we get if you have a lot of big animals in fast flowing water.

这就是当有很多大型动物在急流中时会出现的情况。

And he just became the Guinness World Record holder for performing the first skydive into the jet stream.

他刚刚成为吉尼斯世界纪录的保持者，因为他是第一个在急流中跳伞的人。

That divide is the jet stream or strong currents of air created when warm and cold air masses meet.

这条界线是暖气团和冷气团相遇时产生的急流或强流。

In 1945, Grand Rapids, Michigan and Newburgh, New York were among the first communities to start fluoridated water artificially.

1945 年，密歇根州的大急流城和纽约州的纽堡成为最早开始人工添加氟化物的社区之一。

Downpours on Saturday were rapidly turned the creeks that run behind backyards and through downtown Waverly into raging rapids.

周六的倾盆大雨迅速将流经后院并穿过韦弗利市中心的小溪变成了汹涌的急流。

The Jetta is named after the jet stream in subtropic to middle latitudes.

捷达以亚热带至中纬度地区的急流命名。

That includes a fast meandering air current known as a jet stream.

这包括一种被称为急流的快速蜿蜒的气流。

Thank you all for watching in Grand Rapids, Michigan.

感谢大家观看密歇根州大急流城的节目。

The jet stream around the south pole  is fairly stable.

南极周围的急流相当稳定。

This seems  to slow it down enough that the countervailing jet stream overrules it.

这似乎足以减慢它的速度，以至于抵消的急流推翻了它。