1、Secondly, unlabeled intrusion detection technology may product relatively high false alarm rate.
其次，針對一般無標記異常檢測技術(shù)存在較高誤報率的問題。

2、On the other hand, people can get substantial unlabeled documents easily from the Web.
另一方面，人們容易獲得大量的未標記樣本。

3、unlabeled luggage is liable to be lost.
未貼標簽的行李當然會丟。