4视频豆瓣7.6
5视频
20视频豆瓣6.8
9视频豆瓣6.1
6视频豆瓣6.1
9视频豆瓣5.9
13视频豆瓣7.0
液体中小气泡的照片,在深红色背景下显微镜下观察,每个气泡缓慢移动。
Shot of small bubbles in a liquid, viewed microscopically against a deep red background, while each bubble slowly moving.
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