... 骶区||sacral region 骶曲||sacral curvature; sacral flexure 骶神经||sacral nerves ...
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荐弯曲(sacral curvature)腰弯曲(lumbar curvature) 胸弯曲 ( thoracic curvature )颈弯曲(cervical curvature) 正确答案: 腰弯曲(lumbar curvature)
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