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There are three major breakthroughs in iPod.
iPod有三大重要突破。
Let's take a look at each one of them.
让我们来逐个看一下。
The first one is, it's ultra-portable.
首先，它是超便携的。
So, if we're going to keep 1000 songs on iPod, and it fits in your pocket, how do we do this?
如果我们要在iPod里存1000首歌，而且它能装进你的口袋，我们是怎么做到这一点的呢？
How do we possibly do this?
我们怎么可能做到这一点呢？
Well, we start start off with an ultra-thin hard drive.
我们从采用一种超薄硬盘开始。
We've got a 1.8" diameter hard drive that's 0.2" thick. Super thin!
我们有一个直径为1.8英寸，厚度为0.2英寸的硬盘。超级薄！
And that hard drive is 5 gigabytes in capacity.
而这个硬盘的容量是5GB。
Five gigabytes, which holds 1000 songs at 160 kilobit rate, which is a very high-quality rate of MP3 compression.
5GB，可以存储1000首比特率为160kb的歌曲，这是一个非常高质量的MP3压缩率。
Very high-quality. A thousand songs on this 5 gigabyte drive.
非常高质量。5GB容纳1000首歌。
And we've built in 20 minute skip protection.
而且我们已经实现了20分钟的跳读保护。
That's not 20 seconds; 20 minute skip protection.
不是20秒，而是20分钟的跳读保护。
So you can take iPod bicycling, mountain climbing, jogging -- you name it -- and you're not going to skip a beat.
这样你可以在骑自行车，爬山，慢跑--你能想到的任何运动时使用iPod--你不会跳过一个节拍。
