镜头都是由光学玻璃制成的，要用特殊材质的镜布来擦。
Lens are made of optical glass and should be cleaned with cloth made of special materials.
镜头可以用擦镜纸或眼镜布轻轻擦拭，保持洁净。
Lens glasses with lens cleaning paper or cloth gently wipe to keep clean.
镜头可以用擦镜纸或眼镜布轻轻擦拭，保持洁净。
Lens glasses with lens cleaning paper or cloth gently wipe to keep clean.
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