It would need to deploy a parachute, descend through the clouds and transmit a GPS coordinate to a cell phone tower.
它需要打开降落伞穿过云层下降,把 GPS 坐标发射到手机基站。
If each person had to buy a cell phone tower just to use a mobile phone, how many people would have mobile phones?
如果每个人都要买一个蜂窝电话发射台才能使用移动电话的话,那还有多少人能用得起移动电话呢?
Radiation levels also change depending on the phone type, the distance to the nearest cell phone tower and the number of people using phones in the same area.
辐射的放射水平还取决于手机类型、与最近的手机信号发射塔的距离以及同一区域内使用手机的人数。
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