不明了的

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

这位歌手智, 选了一些他唱好歌曲。

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.

非那根抗眩晕和呕吐机理尚了，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，巴格达枪手星期四傍晚在摄影师阿齐兹和录音师尤素夫下班回家途中袭击了他们车辆。