undocumented

形容词

1. 1

   无合法证件的、无居留证件的多指移民

   Thousands of undocumented workers take jobs on local farms each year.

   每年都有数千名无合法证件的工人在当地农场打工。

2. 2

   无记录的、未记载的、查无实据的

   The hospital found several undocumented cases in the old files.

   医院在旧档案中发现好几件没有记录的病例。

3. 3

   未附说明文件的电脑

   Programmers often rely on undocumented features that may disappear later.

   程式设计师常依赖未附说明文件的功能，但这些功能日后可能消失。