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

很吓的。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种方法。

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

就是引起很怕和恐慌的急流。

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

是许所看到的令恐惧或使他们焦虑的急流。

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

穿越样的急流小象来说是一个巨大的威胁。

Firefighters here rescued a motorist stranded in rushing waters.

消防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.

在些急流的地方，扁石蜥的数量则要少得。

There are advantages to life in the fast stream.

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.

就是当有很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。

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

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。

When the frigid jet stream bumps hard against humid air generated by the Gulf Stream in the Atlantic, meteorological mayhem results.

寒冷的急流猛烈撞击大西洋湾流产生的潮湿空气会引发气象灾。

This cosmic stream is like celestial rapids.

宇宙流就像天界的急流。

And remember the jet stream is created where warm southern air meets cold northern air.

请记住，急流是在温暖的南方空气与寒冷的北方空气相遇的地方产生的。

My name is Nora, and I'm five, and I live in Grand Rapids, Michigan.

我叫诺拉，今年五岁，住在密歇根州的大急流城。

Thank you all for watching in Grand Rapids, Michigan.

感谢密歇根州大急流城的所有观众。