I have two devices to me solve mysteries like that: a camera with a macro lens, and a pair of surgeon's glasses, which are heavy metal frames with little binocular telescopes mounted on them.
我有两个设备来揭开这个谜：一架有微距镜头的相机，和一副内置了微型双目显微镜的重金属框架手术眼镜。
2
Several lenses mounted on a turret arrangement permit quick lens changes.
几个不同的镜头装在透镜旋转台上，这样可以很快改换镜头。
3
Two sensors pick up the movements and transmit the information to a small motor mounted next to the lens that moves it.