It bowed in response to the forces moving up the leg from the ground, stretching the various bone cells and forcing them to adapt, usually by adding cells, which made the bone denser.
为了对这种将腿提离地面的作用力作出反应，骨头会拉伸各种骨细胞，并强迫它们适应，通常是透过增加细胞，这导致了骨头密度变得更高。
It bowed in response to the forces moving up the leg from the ground, stretching the various bone cells and forcing them to adapt, usually by adding cells, which made the bone denser.
为了对这种将腿提离地面的作用力作出反应，骨头会拉伸各种骨细胞，并强迫它们适应，通常是透过增加细胞，这导致了骨头密度变得更高。
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