The back is entirely flat, made of either glass (more likely) or ceramic or shiny plastic in order for the cell signal to poke through.

背部全平，材质为玻璃或塑料(更像是玻璃)以保证手机信号通过。

youdao

The same holds true for tons of cell phones and other devices-we try to make 'em tough, but inflexible glass displays are always at risk of cracking or shattering.

这样的事情同样应用于其他数以万计的手机和设备——我们尝试着让它们更坚固，但是不可弯曲的玻璃显示屏永远处在破碎甚至粉碎的威胁下。

youdao

When the tip penetrates the cell membrane the membrane seals around the glass.

当尖端穿透细胞膜，膜即将玻璃毛细管封住。

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The grizzled 55-year-old sits behind a glass counter filled with cell-phone accessories.

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Mr Clarke said that as staff opened the cell door, the prisoner surged forward, grabbed glass from a broken TV set outside the cell and attacked the officers with it.

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Suntech Power is currently pursuing thin film technology, a low cost PV technology that involves depositing several thin layers of silicon or more complex materials on a substrate such as glass to make a PV cell.

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