It's dangerous to want to get away from earth awhile, to get your feet entirely off the ground.
想要逃离地面一会,让自己的双脚同时离开地面很危险。
and they want to get away.
其实他们想要闪人。
They want to get as far away from each other possible, the ideal angle is 120. But what we have here is a four-membered ring, so what angle does 90° that have to be, that bond? 90 degrees.
它们想要尽量远离彼此,最理想的是形成120°键角,但现在是个四元环,所以这键角应该多大?
Right, so the things we want you to take away from this are, get into the habit of using pseudo code when you sit down to start a problem, write out what are the steps.
好,这儿我想大家明白的就是,养成解决问题时先写伪代码的好习惯,把步骤都写出来,我想要告诉你们的是一个好的程序员。
BH3 All of our electrons are in our bonds, we want to got them a 120 degrees away from each other, that's as far away as we can get them.
比如说,它是这样的,所有的电子都在键中。
And since we have two bars that are together like this, once they're both loaded up with electrons there's going to be negative charges that repel, so the electrons will want to get as far away as possible, and they're on their slow way to doing that, to getting as far away from each other as possible.
因为我们有两个棒像这样在一起,一旦它们加载了电子,就会因为有负电荷而排斥,所以这些电子就会,互相离开的尽可能远,它们的这个过程很慢,离开的尽可能远。
So, operands. Let us take expressions, get values out, we can store them away in places, but ultimately we want to do something with them, so we need to now start talking about what are the things we can do inside of Python, or any programming language, to manipulate them.
也就是运算对象,让我们看看这些表达式,然后看看里面的这些值,我们可以把他们存在计算机的任何位置中,最终目的还是要对这些值做一些操作,因此我们现在需要开始讨论,在Python里面可以做什么,来操作它们了,或者在任何编程语言里。
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