未详

shū de zuò zhě wèi xiáng

书的作者未详。

The author of the book is unknown.

zhè ge zuò zhě shēng zú nián yuè wèi xiáng

这个作者生卒年月未详。

The dates of birth and death of the author are unknown.

àn qíng wèi xiáng

案情未详。

The details of the case are unknown.

zhǔ yīn wèi xiáng

主因未详。

The details of the principal cause are not known.

bìng yīn wèi xiáng

病因未详。

What brought on the illness is not clear.