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All right, Squeaks. Are you ready?
好了，吱吱。准备好了吗？
Oh, hey, there. You caught us at a really great time.
哦，嘿。你找我们的时间正好。
It's almost spring here at the Fort, which means we're going to start getting a lot of different kinds of weather.
福特堡快迎来春天了，这意味着我们将开始迎来各种不同的天气。
Rain, thunder, late snow, warm days, cold days, even fog.
雨、雷、晚雪、暖天、冷天，甚至还有雾。
So to brush up on all the different types of weather, there are and how they happen.
因此，为了温习一下所有不同类型的天气，有几种天气，以及它们是如何发生的。
We're going to play a game.
我们要玩一个游戏。
I'm going to give Squeaks some clues and he's going to try and tell me what sort of weather I'm talking about.
我会给吱吱一些线索，他会试着告诉我我说的是什么样的天气。
And if he gets most of them right, he'll win an amazing prize.
如果他答对了其中的大部分，他将赢得一个惊天大奖。
You can play along too.
你也可以一起玩。
Alright, you ready?
好了，准备好了吗？
Hello, there, everyone, and welcome to the game of weather wisdom What's the Weather.
大家好，欢迎收看天气智慧游戏--是什么天气。
I'm your host, Mr. Brown and our contestant today is Squeaks, the robot lab rat.
我是你们的主持人，布朗先生，我们今天的参赛者是机器鼠吱吱。
Squeaks is seven years old. He enjoys science, loves food and it says here that you're scared of spiders.
吱吱已经7岁了。他喜欢科学，喜欢食物，害怕蜘蛛。
Is, is that true?
是真的吗？
Fascinating.
令人着迷。
Well, there won't be any spiders in today's game so you can rest easy what there will be is lots and lots of weather.
好的，今天的比赛不会有蜘蛛，所以你可以放心，因为会有好多天气。
Let's get to our first question.
让我们开始我们的第一个问题。
This type of weather happens mostly in the winter.
这种天气主要发生在冬天。
It happens when tiny particles of water freeze high up in the clouds stick together and fall down to earth as little crystals.
当冻结在云层高处的微小水粒粘在一起，以微小晶体的形式落到地面上时，就会发生这种情况。
And it's really fun to sled in this weather too.
而且在这样的天气里拉雪橇也很有趣。
Name that weather, squeaks.
说出那个天气的名字，吱吱。
That's right, Squeaks.
没错，吱吱。
The answer is snow.
答案是雪。
Now here's Jesse to tell us more.
下面是杰西为我们带来的更多信息。
Who's up for a word game?
谁想玩这个文字游戏？
When I say science, what picture comes into your mind.
当我说科学时，你脑海中浮现出什么样的画面。
Is it stuff like test tubes and telescopes?
是试管和望远镜之类的东西吗？
Maybe it's computers or microscopes or living things like flowers or frogs.
也许是电脑或显微镜，也可能是鲜花或青蛙之类的生物。
But did you think of anything that looks like art?
但你有没有想到任何看起来像艺术品的东西？
A lot of science is really beautiful.
很多科学真的很美。
And there might be no better way to study the beauty of nature than by looking at snowflakes.
也许没有比看雪花更好的方式来研究大自然的美了。
Have you ever taken a close look at snowflakes in the winter when they land on your coat or mitten just before they melt?
你有没有仔细观察过冬天的雪花，当它们落在你的外套或手套上，就在它们融化之前？
Each snowflake is a six-pointed work of art as cool and as individual as the ones you've probably made with paper and scissors.
每一片雪花都是一件六角的艺术品，就像你可能用纸和剪刀做的一样酷，也一样有个性。
But how does nature make snowflakes?
但是大自然是如何形成雪花的呢？
First thing to know is the little six-pointed pieces of ice that you and I call snowflakes are really made up of snow crystals.
首先要知道的是，你我称之为雪花的小六角形冰块实际上是由雪晶组成的。
Scientists use the word snowflake to describe the fluffy white things that fall from the sky, which are actually bunches of snow crystals all stuck together.
科学家们用雪花这个词来描述从天空落下的蓬松的白色物体，它们实际上是粘在一起的一串串雪晶。
And the journey of a snow crystal begins in a cloud.
雪晶的旅程从云中开始。
Up there water in the form of gas called water vapor.
在那里，水以气体的形式存在，被称为水蒸气。
Freezes around a piece of dust or pollen that's just floating around in the cloud.
冻结在一块漂浮在云层中的尘埃周围。
This forms what's called a seed crystal and seed crystals can become snow crystals if conditions inside the cloud are just right.
这就形成了所谓的籽晶，如果云层内部的条件恰到好处，籽晶可以变成雪晶。
As the sea crystal bumps around inside of the cloud lots of particles that make up water.
当海洋水晶在云层内部颠簸时，大量的颗粒组成了水。
Stick to it, the particles that make up water have a very specific shape.
坚持，构成水的颗粒有一个非常特殊的形状。
They kind of look like the letter V and when enough of these particles stick together they form shapes that have six sides called hexagons and that's your most basic kind of snow crystal.
它们看起来有点像字母V，当足够多的粒子粘在一起时，它们形成了有六个边的形状，称为六边形，这是最基本的雪晶类型。
But if there's enough water around then, more water particles will attach at the little points of that six-sided crystal, each becoming an arm or a branch.
但如果周围有足够的水，更多的水颗粒就会附着在这个六边形晶体的小点上，每个颗粒都会变成一只手臂或一根树枝。
From there all kinds of different things can happen even though all snowflakes have six sides.
从那里可以发生各种不同的事情，即使所有的雪花都有六个面。
They can end up looking totally different from one another.
他们最终可能会看起来完全不同。
In fact, scientists have names for more than 30 different shapes of snow crystals some are big and flat and are called plates.
事实上，科学家们有30多种不同形状的雪晶的名字，其中一些又大又平，被称为星盘状雪花。
Others look long and narrow called needles.
其他看起来又长又窄的，被称为雪针。
Still others are tall and wide like columns.
还有一些像柱子一样又高又宽。
And then, there's probably the most famous shape called dendrites.
然后，可能有一种最出名的形状叫做树枝晶。
They look kind of like stars that have sprouted, tree branches.
它们看起来有点像已经发芽的星星，树枝。
The shape that each snow crystal takes depends on what the conditions were like.
每个雪晶的形状取决于当时的天气条件。
As it formed in the cloud, things like temperature and how much water is in the air can make a big difference if you're a snowflake.
因为它是在云中形成的，如果是一片雪花，温度和空气中水分的多少等因素会产生很大的不同。
So for example, colder temperatures often make flakes with more pointy and fancy arms.
例如，较低的温度通常会使雪花有更尖更花哨的手臂。
While snow crystals that are made in warmer temperatures and air with less water in it tend to be smaller and simpler.
而在温度较高、空气中水分较少的环境中形成的雪晶往往更小、更简单。
Now you might have heard that no two snowflakes are alike.
现在你可能听说过，没有两片雪花是一样的。
A lot of them do look really similar to each other.
很多雪花看起来真的很相似。
But scientists think that it would be really hard for any two to end up being exactly the same.
但科学家们认为，任何两片雪花最终都很难完全相同。
That's because the conditions in the clouds are always changing.
这是因为云中的条件总是在变化。
So the flakes that they make are always changing too.
因此，它们制造的薄片也总是在变化。
Once a snowflake takes shape, its journey has only just begun.
一旦雪花成形，它的旅程才刚刚开始。
After bouncing around in the cloud for a while it falls to the ground and as it falls it keeps changing depending on the temperature.
在云里弹了一段时间后，它落到地面上，随着它下落，它会随着温度的变化而不断变化。
The amount of water in the air and other things like wind that it passes through.
空气中的水和其他东西，如风，传过了多少风。
Since each flake takes a different path all the way to the ground , each one ends up being slightly different.
由于每一片雪花都会沿着不同的路径到达地面，所以每一片雪花最终都会略有不同。
And that's why scientists say that no two snowflakes are exactly the same.
这就是为什么科学家们说没有两片雪花是完全相同的。
But they're all really interesting and beautiful.
但它们都很有趣，也很漂亮。
So now you know how snow crystals are made by nature, miniature. Works of art, no scissors required.
所以现在你知道雪晶是如何由自然、微型自然创造的。艺术品，不需要修剪。
