5视频豆瓣8.6
9视频豆瓣5.9
2视频
10视频豆瓣9.1
8视频豆瓣8.3
6视频
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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