This is an illusion; if you look at the screenshot below, there are user interface elements hidden in the top panel.

这是一个假象；如果您观察下面的屏幕图，将会看到在顶部面板中隐藏了一些用户界面元素。

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The wall cabinet is composed of the door panels, bottom panel, shelf, top panel, side panel and back panel.

其中吊柜是由门板、底板、层板、顶板、侧板、背板这些板件构成。

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The wall cabinet is composed of the door panels, bottom panel, shelf, top panel, side panel and back panel.

其中吊柜是由门板、底板、层板、顶板、侧板、背板这些板件构成。

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