求翻译：More than 100 Uighurs had gathered to demonstrate against alleged illegal seizures of Uighur-held land and to demand information about relatives who they said had disappeared amid a police crackdown that began after riots in the regional capital of Urumqi in 2009, Dilxat said.是什么意思？

待解决 悬赏分：1 - 离问题结束还有