旁边的照相机追踪了狗的眼部活动。
他把照相机放在巢箱里，以追踪鸟儿的睡眠模式。
He puts cameras inside nesting boxes to track sleeping patterns.
“扫描鹰”装备有特殊稳定的光电和红外照相机，可以允许操作员对固定和移动目标进行追踪。
ScanEagles are equipped with specially stabilized electro-optical and infrared cameras that permit the operator to track both stationary and moving targets.
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