mystify

The cause of the disease mystified doctors for many years.那种疾病的起因使医生困惑了很多年。

Her strange behavior has mystified [=baffled] her friends and family.她奇怪的行为让朋友和家人很不解。

I was thoroughly mystified by his reaction. [=I could not understand his reaction]他的反应让我大惑不解。

The magician has been mystifying his audiences for years with his amazing tricks.那个魔术师的神奇戏法迷惑了观众很多年。