1. The incident had gone unrecorded. 
   该事件并未留下记录。
2. a prehistoric unrecorded language that was the ancestor of all Indo-European languages. 
   一种古老的无记载的语言是所有印-欧语系的祖先。
3. So far, about one-third of Hong Kong has been surveyed with about 2000 unrecorded items of historic interest identified. 
   调查人员已完成了全港约三分一地区的调查工作，而所鉴定具历史价值但未获记录的项目达2000项。
4. book fair ,book market 
   书市
5. A book report; book learning. 
   书面报告：书本知识

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• 1. 未登录的图书
  unprocessed book 未加工图书...unrecorded book 未登录的图书...warehouse book (W.B) 仓库帐簿
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