6视频豆瓣7.5
32视频豆瓣7.5
13视频豆瓣5.6
11视频
4视频豆瓣6.8
7视频豆瓣7.4
3视频豆瓣5.1
通过玻璃观察,当齿轮旋转时雕刻的手表机械装置。
Mechanism of a watch engraved as its gears rotate, seen through glass.
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