Using the device's on-board camera and thermal-imaging technology, the operator was able to pickup the suspect through his body heat and direct foot patrols to his location.
操控者利用该装置上安装的摄像机和热成像技术得以通过疑犯身体的热量找到并指挥徒步巡逻队锁定他的位置。
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In infrared photography, the film or image sensor used within a digital camera is sensitive to infrared lighting, which allows the camera to pickup any light that's invisible to the human eye.
NASA says that's because the moon's surface and the astronauts' suits were so reflective that it was too bright for the camera to pickup the comparatively faint stars.