不明了

Did you actually see the UFO?

你真的明飞行物了吗?

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，推测可能是由于抗碱作用。