不明了的

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

这位歌手明智, 选了一些他唱好的歌曲。

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.

非那根抗眩晕和呕吐的机理尚明了，推测由于其抗胆碱作用。

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阿齐兹和录素夫下班回家途中袭击了他们的车辆。