It was a place of deep mystery and enchantment.

这是一个极其神秘和迷人的地方。

《牛津词典》

Well, this isn't some deep mystery.

这不是什么深藏的谜团？

youdao

This is the deep mystery of prayer.

这是祷告的深层奥秘。

youdao

Justin Willis,an East Africa researcher at Britain's Durham University, says Sudan's oil industry is deep in mystery.

VOA: special.2011.01.08

Well, this isn't some deep mystery.

这不是什么深藏的谜团

耶鲁公开课 - 死亡课程节选

So why was she constructing and maintaining such a deep mystery about her second pregnancy?

NPR: One Boy's Heroism in the Face of AIDS

An amazingly successful contrivance: this Agatha Christie-style house-party murder mystery, set in 1932, plants itself deep into social reality and achieves the kind of candor about class and sex that Christie would never have been capable of.

NEWYORKER: Gosford Park

Love him or hate him, the philandering pol with a pizzerial past is a mystery wrapped in a chimera nestled in the inner sanctum of an enigma buried deep inside yet another chimera.

WSJ: Joe Queenan on Barbara Walters's Most Fascinating People | Moving Targets