When I call this class definition, it calls init, init and I give it an x and a y value.
我说过,当我们,调用这个类的定义的时候,它会去调用。
And is able to then say, inside of that class definition, find the value of x.
这个类的定义这里然后取值,也可以这么说,在类的定义的里面。
The basic definition-- the expected value of some random variable x--E--I guess I should have said that a random variable is a quantity that takes on value.
最基本的定义,某一个随机变量X的期望值E,我应该提到过,随机变量是一个可以取值的数
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