“2Part-OLTrailer20210901” Online Video Purchase

by Shopmaster on 2021/09/04

Presenter: Chen Zhonghua  Length: 4 mins  Difficulty: 3/5  Language: English  
Year: 2021  Location: Edmonton, Canada  

Every move is made up of two body parts. When one part moves, the other part cannot move. The movement of the part comes from the hinge between the two parts.


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