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All right, Squeaks. Here's the last question.
好了，吱吱。这是最后一个问题。
This weather can also be scary and dangerous.
这种天气也可能是可怕和危险的。
They form when warm and cold air starts spinning around high up in the clouds and they look like a big spinning funnel of clouds that touches the ground.
当冷热空气开始在高空的云层中旋转时，它们就形成了，它们看起来就像一个巨大的接触到地面的旋转的漏斗状的云。
Name that weather.
说出这种天气的名字。
You want to call a Fort friend for help answering this question.
你想打电话给一位堡垒朋友，寻求帮助回答这个问题。
Okay, who do you want to call?
好的，你想打给谁？
Howdy, Grady, the tardigrade speaking.
你好，我是慢吞吞的格雷迪。
Wow, you're on What's the Weather.
哇，你在玩猜天气节目。
Congratulations and you want my help answering a question.
恭喜你，你想让我帮你回答一个问题。
Well, I'd be much obliged.
嗯，我会帮你的。
Great, I'll put the question up on the screen for you.
太好了，我会把问题放到屏幕上的。
Hmm, a funnel of clouds.
嗯，漏斗状的云。
Well, I may not be but a simple tardigrade but I do pride myself on knowing a thing or two about weather.
嗯，我可能不是一个简单的慢吞吞的动物，但我确实为自己对天气略知一二感到自豪。
And this here sounds like a rip-roaring tornado.
而这听起来像是撕裂咆哮的龙卷风。
Squeaks, what do you think?
吱吱，你觉得呢？
Is it a tornado?
是龙卷风吗？
That's right！it is a tornado!
没错!这是龙卷风！
I'm glad I could help little partner.
我很高兴我能帮到小伙伴。
I'll see you around.
回头见。
Bye, Grady, now here's more about tornadoes from Jesse.
再见，格雷迪，下面是关于杰西对龙卷风的介绍。
The weather is a funny thing.
这种天气非常有趣。
One day it can be sunny and warm, perfect day for sunglasses and flip-flops.
有一天，阳光明媚，天气温暖，是戴太阳镜和穿人字拖的绝佳日子。
But the next day it can be cold and rainy.
但第二天可能会又冷又下雨。
Most of the time the weather doesn't give us anything that we can't handle with.
大多数时候，天气不会给我们带来任何我们无法应对的东西。
Maybe some sunscreen or an umbrella or a snow shovel.
也许是防晒霜、雨伞或雪铲。
But sometimes and in some places, there can be extreme weather like big thunderstorms or hurricanes or snow storms and one of the most powerful kinds of extreme weather out there.
但有时在一些地方，可能会有像大雷雨、飓风或暴风雪这样的极端天气，以及最严重的极端天气之一。
Is a type of a storm that scientists pay close attention to tornadoes.
龙卷风是科学家们密切关注的一种风暴。
A tornado is a fast spinning column of air that stretches all the way from a thunderstorm cloud in the sky down to the earth's surface.
龙卷风是一种快速旋转的空气柱，从天空中的雷雨云一直延伸到地球表面。
Because tornadoes turn and twist as they move.
因为龙卷风在移动时会旋转。
They're sometimes called twisters.
它们有时被称为旋风。
They form inside really big thunderstorms when cold dry air moving from one direction bumps into warm wet air coming from a different direction.
当从一个方向移动的冷干空气与来自不同方向的暖湿空气相撞时，它们就形成了真正的大雷暴。
Because the cold air is heavier it slides down under the warm air and pushes it up really fast all this fast-moving air rushing up and down can create a sort of spinning thunderstorm.
因为冷空气更重，它在暖空气下滑下来，并以非常快的速度向上推，所有这些快速移动的空气来回奔腾，可以产生一种旋转的雷雨。
And it can eventually keep going to form a tornado and when a tornado forms it can be one of the most powerful forces in nature.
它最终会继续形成龙卷风，当龙卷风形成时，它可能是自然界最强大的力量之一。
Tornado winds are the strongest in the world even stronger than hurricanes.
龙卷风是世界上最强的风，甚至比飓风还强。
In some twisters we know that the wind can blow to almost 500 kilometers an hour.
在一些龙卷风中，我们知道风速可以达到每小时近500公里。
Strong enough to lift heavy things like cars and trucks into the air. And they're loud too.
强大到足以将汽车和卡车等重物抬到空中。而且声音也很大。
People who have seen them or even been in them say they sound like giant roaring trains.
看过龙卷风甚至经历过龙卷风的人说，它们听起来像呼啸而过的巨型火车。
But they don't move as fast as a speeding train.
但它们的移动速度没有疾驰的火车快。
Usually tornadoes travel across the land at about 50 kilometers an hour, slower than most cars go.
龙卷风通常以每小时约50公里的速度在陆地上移动，比大多数汽车的移动速度都要慢。
Now weather can be really unpredictable which means that you just can't predict or know what's going to happen before it happens.
现在天气可能真的很难预测，这意味着你无法在事情发生之前预测或知道将会发生什么。
And that's especially true for tornadoes.
对于龙卷风来说，情况尤其如此。
These windy storms can speed up slow down change direction or even stand still and they can last anywhere from a few seconds to as long as an hour.
这些多风暴可以加速、减速、改变方向，甚至停滞不前，它们可以在任何地方持续几秒钟到长达一个小时。
While tornadoes can happen all over the world they're most common in the united states.
虽然龙卷风可能在世界各地发生，但在美国最为常见。
About two-thirds of all the tornadoes in the world happen right down the middle of the country from the dakotas down to texas especially in the late spring and early summer .
世界上大约三分之二的龙卷风发生在从达科他州到德克萨斯州的美国中部地区，特别是在春末夏初。
Because tornadoes are so powerful and so unpredictable.
因为龙卷风是如此强大，如此不可预测。
Meteorologists spend a lot of time studying them .
气象学家花了很多时间来研究它们。
They want to understand more about exactly how and when tornadoes can form and hopefully predict when they'll show up.
他们希望更多地了解龙卷风是如何以及何时形成的，并有希望预测龙卷风何时出现。
There are even people called storm chasers who follow big storms around the middle of the U.S. hoping to spot one as it turns into a tornado.
甚至有人被称为风暴追逐者，他们在美国中部跟踪大风暴，希望在风暴变成龙卷风时发现它。
So we can get a better picture of what really happens when a twister forms.
这样我们就能更好地了解龙卷风形成时到底会发生什么。
Scientists still don't know for sure when a tornado is going to happen.
科学家们仍然不确定龙卷风何时会发生。
But they have gotten better at predicting which thunderstorms might be strong enough to create one.
但他们在预测哪些雷暴可能足够强来制造雷暴方面做得更好。
And if they spot a bad looking storm early enough then they can give people who live nearby a warning that a twister might be coming.
如果他们足够早地发现了一场看起来很糟糕的风暴，他们就可以向住在附近的人发出龙卷风可能即将到来的警告。
That's one of the most important jobs that a meteorologist has helping people get ready for extreme weather.
这是气象学家帮助人们为极端天气做好准备的最重要的工作之一。
So the more they learn about tornadoes the better we can prepare for them and the more they can help us understand how our weather works even when it's not so extreme.
因此，他们对龙卷风了解得越多，我们就能更好地为龙卷风做准备，他们就越能帮助我们了解我们的天气是如何运作的，即使它不是那么极端。
Wow squeaks you got all the questions right.
哇哦，你答对了所有的问题。
You win what's that weather.
你在天气问答比赛中获胜了。
And your prize is all of the great weather science knowledge you learned today.
你的奖品是你今天学到的所有伟大的气象科学知识。
It is an amazing prize, Squeaks.
这是一个惊天大奖，吱吱。
It's amazing because it's a prize you can share with all of your friends.
这是令人惊讶的，因为这是一个你可以与你所有的朋友分享的奖品。
Okay, okay, how about I make you a cheese sandwich too.
好吧，好吧，我给你做个奶酪三明治怎么样。
Would that be a good prize?
这是个不错的奖品吗？
Thanks for playing with us today.
谢谢你们今天和我们一起度过开心的时光。
If you want to keep having fun with me, Squeaks and all of our friends, hit the subscribe button and we'll see you next time here at the Fort.
如果你想继续和我,吱吱以及我们所有的朋友一起玩耍，点击订阅按钮，我们下一次福特堡见。
