红外线摄像机几乎探测不到北极熊，因为它们的毛是透明的。
Polar Bears are nearly undetectable by infrared cameras, due to their transparent fur.
一束由发光二极管发射出的红外线光立刻进入到使用者眼前的空间，这样一个小型摄像机装置，可分析人们的手势轨迹。
A ring of LEDs projects infrared light into the space immediately in front of the user so a camera in the device can interpret gestures.
在我国的直升机巡线试验中，多采用红外线摄影仪、数码摄像机、高分辨望远镜、可见光录像机等设备作为观测工具。
During helicopter power line inspection tour, observation equipments, including infrared cameras, digital video cameras, high-resolution telescope, and visible light VCRs, etc.
即使是没有巡逻员的时候，摄像机、无人驾驶侦察机以及三种不同的地震传感器、磁场感应器以及红外线感应器也在实时监控。
When there are no agents around, cameras, reconnaissance drones and three different types of sensors-seismic, magnetic and infra-red-keep tabs on things.
即使是没有巡逻员的时候，摄像机、无人驾驶侦察机以及三种不同的地震传感器、磁场感应器以及红外线感应器也在实时监控。
When there are no agents around, cameras, reconnaissance drones and three different types of sensors-seismic, magnetic and infra-red-keep tabs on things.
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