So, let's just take a quick example to show how not completely you can use these periodic trends, that there are limits.
那么,让我们举一个小例子来看一下,你是如何不能将元素周期律用在所有地方的,它是有局限性的。
Let me show you a little example, and then we'll come back to this.
让我给你举一个小例子,然后我们再回过头来看这个。
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