It's a solid little slab with a similar-looking plastic front and rubberized texture as the $79 non-touch model, but with fewer buttons.

这款结实小巧的电子书与79美元的非触摸款外形类似，正面采用塑料材质，而背面则同样以橡胶制成。

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A practical solid texture system requires not only a precise model, but also abundant visual effects, good extensibility and feasibility.

一个实用的实体纹理系统不仅应该有清晰的模型，还要求纹理的效果丰富，易于扩展和实现。

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