A biological recognition method by feature detection of human body on the move was presented, and the mathematical model of Doppler shift was established.

根据生物的生命体行为特征，提出一种新的生物识别方法，并建立了多普勒频移数学模型。

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Fingerprint identification technology, currently one of the most mature biological feature-based identification technologies, can be used to identify human beings in various occasions.

指纹识别技术是目前最为成熟的生物特征识别技术，在各种场合用于人的身份识别。

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Skin color is a very important biological feature of the human body.

肤色是人体的一个非常重要的生物特征。

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