5视频豆瓣9.2
15视频豆瓣8.0
6视频豆瓣5.9
30视频
1视频豆瓣8.9
37视频豆瓣7.5
一名男子用扳手组装一架小型精密自制无人机的螺旋桨的近景。
Close view of the hands of a man assembling the propellers of a small and sophisticated homemade drone with a wrench.
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