有2%到3%的人因大脑发育不良而引发学习障碍，但这类学习障碍者绝大多数是男性。
Poor brain development causes learning disabilities in 2% to 3% of the population, but the problem is more prevalent in males.
先前的研究发现，那些受轮椅束缚或者卧病不起的人，会在身体受压更大的部位，出现肌肉发育不良的情况，并且增长脂肪。
Previous research found that those who were bound to wheelchairs or were bedridden developed abnormal muscle and fat growth in areas of the body where more pressure was placed.
先前的研究发现，那些受轮椅束缚或者卧病不起的人，会在身体受压更大的部位，出现肌肉发育不良的情况，并且增长脂肪。
Previouss research found that those who were bound to wheelchairs or were bedridden developed abnormal muscle and fat growth in areas of the body where more pressure was placed.
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