still in a preliminary stage
still in a preliminary stage
还在初步阶段
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Ear recognition is a new technique of biological recognition and the research on ear recognition is still in the preliminary stage currently. The mature theory or method has not been found yet.
人耳识别是一种新的生物特征识别技术，目前，研究尚处于起步阶段，有关的理论和方法还很不完善。
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