• All right. So it's 7 that are in chlorine, it's the same as fluorine or any of the others in that row or in that group rather.

    好,氯有七个,跟氟或者在那列,的其它元素样。

    麻省理工公开课 - 化学原理课程节选

  • One of the initial things that Keyes found is that there was as much as a ten-fold difference in rates of coronary disease.

    凯斯首先发现的其中项结果是,七个国家的冠心病发病率

    耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

  • So, let's go back to the notes, and let's fill these in, seven electrons. Another way you could have known them was to look at Lewis' notes here, where if look at this box carefully you see there are seven dots around the cube, so there are his seven valence electrons.

    那么,让我们回到讲义,把它们填进去,七个电子,还有另外种方法可以知道这些,那就是看看路易斯的讲义这里,大家可以看到这个立方体周围有七个点,因此有七个价电子。

    麻省理工公开课 - 化学原理课程节选

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