Because step five is that we need to fill in our bonding electrons, and we start it with filling in two electrons per bond.
因为第五步要做的是将我们的成键电子填在这,所以我们开始在每个键处填上两个电子。
And I want to focus especially on pages 4 and 5.
我想要重点讲一下第四第五页。
Which--I think this is a quiz question here, probably number five.
我认为这是一个要测验问题,也许是第五道题
I wanted to introduce it to you so that if you don't haven't heard about this before you might want to read a little bit about this before we get to Chapter 5.
我想给你们介绍一下细胞膜,所以如果你没有,以前没听说过这个的话,也许你在学到第五章之前,要读一点关于这些的文献
Let's see how these play out by means of a quick review of Beethoven's Fifth Symphony so all we're going to do here is going to go from the beginning of the track for the first movement to the second movement and so on, and well, let's just start here.
让我们通过迅速回顾贝多芬的第五交响曲,看乐章是如何表现的,我们现在要从,乐曲的第一乐章开头开始,听到第二乐章,以此类推,好,让我们从这开始
This is his Symphony No.5 in B-flat so let's listen to this.
我们要听的来自他的降B大调第五交响曲。
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