Edit. 编辑。

OK, let's begin! 好吧，让我们开始吧！

   

Compound: A substance composed of two or more elements chemically combined in definite proportions by weight. 化合物： A的两个或多个元件在一定的比例（重量）化学结合的组成的物质。

Mixture: Two or more substances that are not chemically united, such as air. 混合物：两种或多种物质，其是未经化学联合，如空气。

Solution: A uniform mixture of varying proportions of a solvent and a solute. 解决方法：溶剂和溶质不同比例的均匀混合物。

   

For many of our students, this is the lesson you've been waiting for. 对于很多学生来说，这是你一直在等待的教训。

   

Lesson... Six. 课...六。

   

Left channel. 左声道。

Right channel. 右声道。

   

Hydrogen, H, +1. 氢， H， 1 。

Sodium, Na, +1. 钠，钠， 1 。

Magnesium, Mg, +2. 镁，镁， 2 。

Aluminum, Al, +3. 铝，铝， 3 。

Potassium, K, +1. 钾，钾， 1 。

Calcium, Ca, +2. 钙，钙， 2 。

Chromium, Cr, +2, three, six. 铬，铬， 2 ，三，六。

   

Any physical difficulty with a record, or a turntable, is taken care of. 用一记，或转台任何身体困难，被照顾。

   

Do you think that Led Zeppelin and Frank Sinatra would go together? 你认为齐柏林飞艇和弗兰克·西纳特拉会走在一起？

   

Edit. 编辑。

   

No. 号

   

Combinations of music. 音乐的组合。

   

You're about to play a sole, 45 RPM recording, 你将要扮演一个唯一的， 45转记录，

But the turntable is set at 33 and 1/3, 但在转盘被设置为33和三分之一，

And the record plays very slowly. 和记录播放速度很慢。

   

Let's pick up the tempo a bit, eh? 让我们拿起拍子了一下，嗯？

   

Now let us imagine you are in the middle of your Disk Jockey program. 现在让我们想象一下你在你的磁盘赛马节目的中间。

   

This is the mark of a professional. 这是一个专业的标志。

   

Yeah, if you could throw a couple...yeah uhuh.. 是啊，如果你能扔几个...是啊uhuh ..

Right when he's playin' the drum... 权当他玩够了鼓...

Let him play a couple' beats alone. 让他打了几个“击败一个人。

   

Eeeeuuh. Eeeeuuh 。

   

Uh! 嗯！

   

Oh I'm sorry, I had the turntable at the wrong speed. 哦，对不起，我只好转台在错误的速度。

   

Listen! 听着！

   

Scratching -- The greatest thing on earth! 搔抓 - 地球上最伟大的事情！

   

What do you do? 你是做什么？

What do you do? 你是做什么？

   

Drop! 滴！

   

Chemical change: a change that alters the composition of the molecules of a substance. New substances with new properties are produced. 化学变化：即改变物质的分子组成的变化。新物质具有新特性的产生。

   

Drop. 下降。

   

From now until your next lesson, we want you to study carefully every section of lesson six, and to go back over Lesson 4. 从现在起直到你的下一课，我们希望你能认真学习第六课的每一个部分，并回到了第4课。

   

Practice carefully, and you will be ready for the new techniques and new situations we will cover together in Lesson 5. 认真实践，你将准备好新的技术和新的形势，我们将一起涉及第5课。