Horseflies are known to prefer horizontal polarised light.

众所周知马蝇偏向于水平偏振光。

But Dr Horvath thinks it might be related to a horsefly's ability to see polarised light, which imposes a sense of horizontal andvertical on an image.

但是Horvath博士认为这可能与马蝇识别偏振光的能力有关，偏振光是从水平和垂直方向打在画面上的。