unsolved
adj. 未解决的;未解答的
例句
On the other hand, the transparent linking of wired and wireless networks is an unsolved problem.
另一方面,有线和无线网络间的透明连接是一个尚未解决的问题。
It is one of the great unsolved mysteries of this century.
这是本世纪尚未解开的大奥秘之一。
《牛津词典》
Will the Internet help explain these unsolved mysteries?
互联网能帮助解释这些未解之谜吗?