双语例句原声例句
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第一列元素最外电子层内均有一个电子，第二列元素则含有两个电子，依此类推。
Elements in the first column all have one electron in their outermost shell. Those in the second column have two outer electrons, and so on.
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在第二列，可以看到这些内容对应的元素名称。
In the second column, you see the name of the element that will go around that content.
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注意，这正是当您对一列数求和时所要做的：从零开始，加上第一个元素，获取结果并将其加到第二个上，持续操作直至列结束。
Notice that this is exactly what you do when you sum a list of Numbers: start with zero, add the first element, take that result and add it to the second, and continue until the list is consumed.
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If you take some from column one or two and you mix it with some from column eight and nine, bingo, you have reaction.
如果你从第一列或者第二列中选出一些元素,将其与第8列或者第9列的元素混合，好，就会发生化学反应。
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