![Close-up,-person-draws-technical-diagram-on-horizontal-dry-erase-board](https://v3.cdnpk.net/videvo_files/video/premium/partners0512/thumbnails/BB_01a2f38b-b8fa-44ba-86ba-b9585a3c4da3_small.jpg)
Close up, person draws technical diagram on horizontal dry-erase board
1080p 00:10
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