不明了的

The singer was unwise to choose songs which lay beyond his ability.

这位歌手明智, 选一些唱好的歌曲。

The mechanisms of anti-vertigo and anti-vomiting effects of phenergan is unkown.It is assumed that the effects are based on the anti-coline effect of phenergan.

非那根抗眩吐的机理尚明，推测可能是由于其抗胆碱作用。

The network says unknown gunmen in Baghdad attacked the vehicle carrying cameraman Alaa Uldeen Aziz and soundman Saif Laith Yousuf as they were returning home from work late Thursday.

家电视台说，巴格达身分明的枪手星期四傍晚在摄影师阿齐兹录音师尤素夫下班回家途中袭击的车辆。