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第一列指出的是要装载的设备。

The first column identifies the device to be mounted.

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第一列(ID)是此表的主键。

The first column (ID) is the primary key of the table.

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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。

麻省理工公开课 - 固态化学导论课程节选