The biological anthropologist Christy Turner is an expert in the analysis of changing physical characteristics in human teeth.
生物人类学家克里斯蒂·特纳是分析人类牙齿的物理特性变化的专家。
Biometric authentication is measuring physical or behavioral characteristics of a human and using these characteristics as a metric for authentication.
生物认证评测一个人的身体或行为特征，并且使用这些特征作为认证的标准。
Over the years, they have fuelled the abortion debate by demonstrating how early physical human characteristics can be seen, raising questions about when life starts.
多年来，有关生命开始的问题，通过提供可见早期人体特征刺激了堕胎辩论。
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