above the average age for marriage ;

On a bell curve of performance , there was overlap between the younger andlder groups.
年轻组和大龄组的数据所构成的钟形曲线有重合的部分.
来源:互联网Objective To investigate therapy of congenital dislocation of hip ( CDH ) in elder children.
目的 探讨大龄儿童先天性 髋 脱位的治疗方法.
来源:互联网摘选
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