Next, calculate the amount of indent you'll need to center the table, based on the page width, two 72-point margins, one wide column, and three regular columns.

下一步，要计算您将需要使表居中的缩进量，这基于页面宽度、两个 72 点边距、一个宽列和三个正常列。

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Center size Specify placement and size of shape by center position and size values (width and height).

中心尺寸通过中心位置和尺寸值(宽和高)来指定形状的位置和尺寸。

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This is because an image can have a varying Blur Width (depth of field) and the subject which is to be in focus is usually in the center.

这是因为图像可能有不同的模糊边缘宽度（景深）和在该中心通常有需要聚焦的被摄物体。

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