undocumented
01
无证的, 无文件的
lacking necessary documents (as for e.g. permission to live or work in a country)
02
未记录的, 未经官方认可的
not recorded or officially recognized
例子
There were undocumented changes made to the software.
软件中进行了未记录的更改。
词汇树
undocumented
documented
document
