Before I respond, she wriggled the waists whereabouts unknown.

不等我回应，她扭着腰肢不知去向。

youdao

His whereabouts have been utterly unknown so far.

迄今他的下落全然未知。

《新英汉大辞典》

Some are now free, but the whereabouts of others is unknown.

其中一些人已经被释放，但是其它被捕者的下落依旧不明。

youdao

Foley himself is long gone into the parallel dimension of a rehab clinic, whereabouts unknown.

NPR: 'Washington Times' Calls for Hastert to Resign

His whereabouts are unknown but some believe he may still be hiding in Sirte.

CNN: In Gadhafi's hometown, his once opulent house lies in ruins

It said these groups had also detained nine other residents of Wardak, whose whereabouts remain unknown.

WSJ: Afghanistan Moves to Curb U.S. Forces