The tombstone has an infrared sense which activates the display when anybody stands in front of the grave.

该墓碑具有红外传感器，每当一有人接近墓碑，显示器即被激活。

youdao

At night, the pit organs allow snakes to "see" an image of their predator or prey-- as an infrared camera does-- giving them a unique extra sense.

在夜晚，窝器能让蛇类“看到”捕食者或者猎物的图像——正如红外摄影机一样——赋予他们一个独特的额外感官。

youdao

At night, the pit organs allow snakes to 'see' an image of their predator or prey - as an infrared camera does - giving them a unique extra sense.

在夜晚，窝器让蛇类“看到”捕食者或者猎物的图像——正如红外摄影机一样——赋予他们一个独特的额外感官。

youdao

Now, the scientists are putting their knowledge of how the beetles sense infrared radiation to use.

BBC: NEWS | Science/Nature | Jewel beetle flies into the inferno