好了，我们已经知道这个了，接着把这个代入到方程里去。

Now, when we know that, we are going to plug that into this equation.

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让我们把它的坐标代入平面方程。

Well, let's plug its coordinates into the plane equation.

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因此，为了解其用法，我们将数字代入方程式中。

So, to understand how this is used, let’s plug some numbers into the equation.

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现在可以把这个代入方程。

So now we can plug this in to our equation here.

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现在可以把这个代入方程。

So now we can plug this in to our equation here.

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