X coordinates: The X coordinate is a point's horizontal distance from the origin.

X 坐标：X 坐标是某一个点距离原点的水平距离。

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The X coordinate of the first element (10) will be 200, the second element (20) will be 400, and so on.

第一个元素(10)的X坐标将是200，第二个元素(20)的X坐标将是400，依此类推。

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Using calculateButtonWidth, you can determine the X coordinate of any particular button relative to the applet by adding the widths of all the previous buttons.

您可以使用 calculateButtonWidth 方法设置按钮的 X 坐标，方法是增加所有早先按钮的宽度。

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Well you know what a point is, it's got an x- and a y- coordinate, it's natural to think about those two things as belonging as a single entity.

把这两个坐标认为，是属于一个独立的实体，是理所当然的事情,因此实现这个目的的。

麻省理工公开课 - 计算机科学及编程导论课程节选

It's easy to think of a point as just a list of an x- and a y- coordinate.

或者说有两个元素的数组,把一个点认为是含有x坐标。

麻省理工公开课 - 计算机科学及编程导论课程节选