The width of the reservoir illustrated here is approximately 8 kilometers (5 miles); a jet flying over the reservoir left a contrail midway between the shorelines.

图片中显示出的水库宽度大约为8千米（5英里），一架从上方飞过的飞机在水库两岸之间留下了一条航迹云。

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The Subject column is also a flexible width, meaning that it occupies as much space as is left over within the list.

subject列的宽度是可变的，即它可以占用列表内剩余的所有空间。

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