The power (and hence the radiofrequency exposure to a user) falls off rapidly with increasing distance from the handset.

与手机的距离增加后，功率(以及用户射频辐射接触量)迅速衰减。

youdao

At a distance of several football fields, the sensation from the exposure was like a blast from a very hot oven, too painful to bear without scrambling for cover.

在几个足球场的距离内，被辐射的感觉就像是滚烫的烤箱里吹来的一阵热风，要是不趴下加以躲避的话，根本没法忍受这样的高温。

youdao

Certainly, distance from the source and dilution in the atmosphere lowers exposure risk.

FORBES: 1st Person | Facing an Unsettled Future After Radiation Exposure