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Yichaoergnomic @UC9brxPSoJa0ulyIBh4qu-OA@youtube.com

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00:22
人體工學手托架
00:58
ergonomic
01:02
Arm rest for desk
01:02
Ergonomic footrest
01:27
Book stand for reading or laptop stand#furniture
02:44
How to choose an ergonomic computer chair