1 that you do not understand or cannot explain; strange 神秘的;无法解释的;奇怪的:
Several people reported seeing mysterious lights in the sky.有几个人报称看见天空中出现神秘的光。
2 (used about a person) keeping sth secret or refusing to explain sth (指人)神秘的,诡秘的:
They're being very mysterious about where they're going this evening.他们对于今天晚上要去哪里,表现得十分神秘。 ➔mysteriouslyadv