这种装置是用来追踪和拍摄高空特技表演练习的。
The appliance lets to trace and shoot skydivers who perform acrobatic exercises in the air.
随着地球转动，拍摄目标会随之而动，这些都会为相机所追踪。
The Earth turns, the objects move along the firmament, all followed by the camera.
Hockeimer说，一个在自动设备里的追踪程序每15分钟就拍摄图片，捕捉一张使用者的照片和一次抓屏经常在同一时间。
Hockeimer said a tracking programme in the devices automatically took images every 15 minutes, usually capturing a photo of the user and a screen shot at the same time.
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