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Now here is fluorine, same skeleton, only fluorine has seven valence electrons.
这是氟，同样的结构，只有氟有七个价电子。
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It's a small city. It's only 49 square miles, seven hundred thousand people.
这城市不大。只有49平方英里，70万人口。
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But, when I went to school, 1 seven was only one less than eight.
但是，在学校里我学到，7只比8少。
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Like, my Russian Culture class only has seven people, so it's very specialized
例如，俄罗斯文化课只有七个人，所以这堂课还是很专业的。
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When Evans found writing at Knossos, he found two-- well, he actually found seven, but only two that turned out to be significant-- two kinds of script.
当埃文斯在克诺索斯发现文字,他找到两种,事实上他一共找到了七种,不过只有两种被认为比较重要,这两种手迹
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It took me seven comparisons, because I can take advantage of the fact I know I only ever have to look at the first element of each sub-list. Those are the only things I need to compare, and when I run out of one list, I just add the rest of the list in.
进行了7次对比，因为我可以利用我知道的优势：,每次只需要比较每个子列表的第一个元素,那才是我需要进行对比的内容,当一个列表的元素处理完了,只需要将另一个列表剩下的元素直接添加进去。
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So I've only been taking Chinese for, like, seven weeks,
所以，到目前为止，我也仅学习了七个星期的汉语，
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