Subject + 仍然 / 尚 + 未知
The adjective 未知 (wèizhī) means 'unknown' or 'not yet known,' describing information or facts that have not been determined. It combines 未 (not yet) and 知 (to know). For example, 仍然未知 means 'still unknown.'
事故的原因目前仍然未知。
Shìgù de yuányīn mùqián réngrán wèizhī.
The cause of the accident is still unknown.
前方的路充满了未知的挑战。
Qiánfāng de lù chōngmǎnle wèizhī de tiǎozhàn.
The road ahead is full of unknown challenges.
这种疾病的传播途径还是未知的。
Zhè zhǒng jíbìng de chuánbō tújìng háishì wèizhī de.
The transmission route of this disease is still unknown.