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坐椅子时间长了很容易疲劳,坐姿也会变得不正确,容易影响形体和骨骼。我想发明一种多功能椅子。它用轻便耐用的纳米材料制成,
Sitting in a chair a long time is very easy to fatigue, sitting position will become incorrect, easy to affect the body and bones. I want to invent a versatile chair. It is made of lightweight and durable nano-materials,