尽管长期以来推销者使用小插件来追踪你的网络浏览习惯，最近的新技术为他们提供了全新的精度水平。
Although marketers have long used cookies to track your Web surfing, recent innovations have given them a whole new level of precision.
数字指纹技术是一种用来辨认非法拷贝，追踪非授权用户的新技术。
Digital fingerprinting is a technique for identifying unauthorized copy and tracing back to its user.
组织追踪法是基于组织多普勒显像的一种新技术。
Tissue Tracing (TT) is a recently developed technique based on tissue Doppler imaging.
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