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

Before you can sum the room cell temperatures, you need to take a flat, 1-d, view of the data.

在求房间各单元温度的和之前，您需要先得到数据的一个一维视图。

youdao

More advanced flat-panel display technology would also have trickled over to cell phones, laptops, and televisions.

更为先进的平板显示技术或许已经触发了手机，笔记本和电视的出现。

youdao

We would start to see Proposition 65 warnings on the thousands of consumer products, including automobile and aircraft parts, beer cans, plastic bath and kitchen appliances, cell phones, cameras, flat screen television sets, hand held computing devices, that use BPA to improve their safety and performance.

FORBES: Fear-Mongering, Junk Science And NRDC

It is also confronting the grim reality that, in a world filled with e-mail and cell phones, greeting card sales are flat.

FORBES: Wild Card

This pace is akin to the adoption of cell phones a decade ago as landline phone companies stood flat-footed not worrying about the little upstart at less than 1% of marketshare.

FORBES: Stop Naysaying The Solar Industry And Get On The Bus!