9视频豆瓣9.1
11视频豆瓣6.3
20视频
1视频
2视频豆瓣6.1
13视频豆瓣6.9
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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