But it may cause hidden damage to the body's lymphatic system and kidneys.

VOA: special.2009.05.26

Embedded within the explicit plot of the simile is a secret, a kind of buried narrative, and it's a hidden story that illustrates Satan's self-destruction.

深藏在这个比喻精巧的情节布局里的，是一个秘密，一个被深埋已久的故事，一个隐藏着的，阐述了撒旦自我毁灭的故事。

耶鲁公开课 - 弥尔顿课程节选

It's not as popular as Central Park. But I feel like it's kind of a hidden gem.

它并没有中央公园有名。但我觉得它是一枚被隐藏的瑰宝。

纽约的公园 - SpeakingMax英语口语达人

It was revelations about Iran's hidden nuclear programme, and the interception of a shipment of nuclear parts bound for Libya (which hastened Libya's decision to tell all about its dealings with the Khan network), that brought Mr Khan down with a thud.

ECONOMIST: Nuclear proliferation

Harriet Baskas' report on the controversy is the latest in NPR's Hidden Treasures series.

NPR: Hidden Treasures: Hawaii Custody Battle

Having discovered tourism's hidden charms, every town and province in Vietnam now wants a share.

ECONOMIST: Tourism could do a lot of good if Vietnam handles it properly