After studying 19 pregnant subjects, Ms. Whitcome found that the lumbar, or lower back, curve in women extends across three vertebrae, as opposed to just two in men.
通过对19位怀孕对象的研究，Whitcome女士发现女性的腰部，或背部下方曲线可包含三块椎骨，而男性只有两块。
After studying 19 pregnant subjects, Ms. Whitcome found that the lumbar, or lower back, curve in women extends across three vertebrae, as opposed to just two in men.
通过对19位怀孕对象的研究，Whitcome女士发现女性的腰部，或背部下方曲线可包含三块椎骨，而男性只有两块。
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