He calls it, a whole-body photon detector.

他称其为全身光子探测器。

What we don't know is why they want to detect ultraviolet light so badly that they've turned their whole body into a photon detector.

我们不知道的是， 为什么他们如此渴望探测紫外线， 以至于他们把整个身体变成了一个光子探测器。