Someone or something that is mysterious is strange and is not known about or understood.
例句
He died in mysterious circumstances...他死得很蹊蹺。A mysterious illness confined him to bed for over a month...他得了一種神秘的怪病，臥床有一個多月。
ADJ-GRADED
愛故弄玄虛的;神秘的
If someone is mysterious about something, they deliberately do not talk much about it, sometimes because they want to make people more interested in it.
例句
As for his job — well, he was very mysterious about it.至于他的工作，他總是顯得非常神秘，從不多說。
英漢詞典釋義
adv.
神秘地,不可思議地,難以理解地
a man who mysteriously vanished from his home last month上個月從家中神秘失蹤的一名男子Foggy mountains are mysteriously attractive.煙霧茫茫的群山有著神秘的魅力。He vanished mysteriously after the close of business on Saturday night.星期六晚上停止?fàn)I業(yè)后他神秘地失蹤了。
英英詞典釋義
Adverb
1. in a mysterious way;
"the book had been mysteriously moved from its customary place"