To help manage the presentation layer in your application, you should split it up into manageable units.

为了有助于管理你的应用程序的表现层，你应该把它分成可管理的小单元。

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Colour-enhanced scanning electron micro-graph of the split end of a human hair showing the outer cuticle layer surrounding the inner cortical layer.

色彩效果增强的人类断裂头发尾部电子显微照显示外面的表皮层包裹着里面的皮质层。

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So after each layer is deposited, nitrogen fluoride is pumped into the chamber and is split to release highly reactive fluorine atoms that clean the walls.

所以在每层材料放置好之后，氮氟化物就被泵进工作舱中并分散开来，释放出高活性的氟原子来清洁墙壁。

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The result was interesting, Unlike pork, the wild boar ribs had two distinct layers, sort of like pork belly, with a layer of meat and a layer of fat almost perfectly split horizontally.

FORBES: Wild Boar: The Other Other White Meat?