adj.神秘的，诡秘的,难以理解的，不可思议的,魔,玄妙
Soon they were dead, victims of a mysterious poisoner.
不久他们就死了，是一个神秘的投毒者下的手。
A mysterious illness confined him to bed for over a month.
他得了一种神秘的怪病，卧床有一个多月。
As for his job — well, he was very mysterious about it.
至于他的工作，他总是显得非常神秘，从不多说。