To provide greater load bearing capacity, adapt to the natural physiological curve of the human skeleton.

能提供更强承托力、顺应人体骨骼自然生理曲线。

youdao

Although people in every population come in all shapes and sizes, body types and physiological characteristics follow a Gaussian distribution curve as a result of evolutionary adaptations by our ancestors to extremely varied environmental challenges.

FORBES: The DNA Olympics -- Jamaicans Win Sprinting 'Genetic Lottery' -- and Why We Should All Care