这两个箱子盖的左侧隧道壁包含雷达、红外传感器和照相机而独家箱的右面墙上包含一个额外的雷达传感器。
The two boxes affixed to the left side of the tunnel wall contain the radar, infrared sensor and camera while the sole box on the right wall contains an additional radar sensor.
拍摄老虎基本上要靠设照相机圈套，也就是在猎物必经之路安装自动照相机，当老虎经过走到跟前时由红外传感器触发。
Essentially the only way to photograph them is to set "camera traps", which are remote cameras placed on known game trails and triggered by infrared when a tiger passes in front of them.
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