The skeletal muscular system consists of the 206 bones and hundreds of muscles that protect and support the internal organs and help the body move.
骨骼肌肉系统由206块骨骼和数百块肌肉组成，它们保护、支持内部器官，帮助身体运动。
The skeletal muscular system consists of the 206 bones and hundreds of muscles that protect and support the internal organs and help the body move.
骨骼肌肉系统由206块骨骼和数百块肌肉组成，它们保护、支持内部器官，帮助身体运动。
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