Thus by stacking three HBox instances inside a VBox, you get a flexible grid.

这样，通过在一个VBox内堆叠三个HBox实例，就得到一个灵活的网格。

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The HBox and VBox are simple horizontal and vertical layout managers that are overdue.

HBox和VBox是原先就有的简单的水平和竖直布局管理器。

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As its name suggests, HBox is similar to VBox, but it lays out its contents horizontally, from left to right.

从名称可以看出，HBox类似于VBox，但它是从左到右水平放置内容的。

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