undocumented
adj. 无事实证明的;无正式文件的
例句
Perhaps half of the farm laborers are undocumented immigrants.
也许农场工人中有一半是非法移民。
Others highlight the strain that undocumented immigrants place on public services, like schools, hospitals, and jails.
另一些人强调非法移民给学校、医院和监狱等公共服务带来的压力。
Undocumented and Unsupported Capabilities used.
被使用的无文档记载和不支持的功能。