A proximity detector tracks the bees' location.

接近检测器跟踪蜜蜂的位置。

Paul glanced at the proximity detector on the floor, studying the dials illuminated in the blackness by phosphor tubes.

保罗瞥了一眼地板上的接近探测器，研究着荧光管在黑暗中照亮的刻度盘。