ดูวิดีโอฟรี A Fun Treadmill Experiment
คำอธิบายแอนิเมชัน:
If you have a treadmill at home you should definitely try this. For safety, you can use more measures, add some extra cushions and pillows.
If you have a treadmill at home you should definitely try this. For safety, you can use more measures, add some extra cushions and pillows.