Hayley教口語(yǔ)，“成了一個(gè)謎”用英語(yǔ)怎么說(shuō)？

Shroud /?ra?d/ 作動(dòng)詞表示“覆蓋，遮蓋”

to be a matter about which very little is known or understood

成了一個(gè)謎，籠罩在謎團(tuán)中

Her whereabouts have been shrouded in secrecy since she received the death threat.

自從收到死亡威脅后，她的行蹤就成了一個(gè)謎。

The process was shrouded in secrecy and little explanation was given as to her qualifications for the post.

整個(gè)過(guò)程是秘密進(jìn)行的，而且對(duì)于她出任該職務(wù)的資格，也沒(méi)有多少解釋。