After his death, according to his biographers - Evlanoff and Flour, and Fant - Nobel's letters were locked within the Nobel Institute in Stockholm and became the best kept secret of the time.

他逝世后，为他撰写传记的作家Evlan of f把他的信件锁在设在斯德哥尔摩的诺贝尔学院，并得到了妥善的保管。

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The behaviour and even business value of the same service could be changed due to applied policies without a change in the interface; this should not be our best-kept secret.

相同服务的行为，甚至是业务价值，都可能因为应用策略在不改变接口的前提下发生变化；这不应该是我们要守口如瓶的秘密。

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A lonely island in the middle of the South Atlantic conceals Charles Darwin's best-kept secret.

一个南大西洋中部的孤岛隐藏着查尔斯·达尔文保存完好的秘密。

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The National Labor Relations Act (NLRA) has a provision that may be the best kept secret in labor law.

FORBES: A Deep Secret That Labor Unions Don't Want Workers to Know

The best kept secret in the pension world remains untold.

FORBES: Public Pension Shortfalls and Consultant Conflicts (September 1, 2002 )

Start your river-led adventure at the city's best kept secret, the turbe, or tomb, of Gul Baba, a 16th Century dervish and the northernmost place of pilgrimage for devout Moslems.

BBC: A Danube-led tour of Budapest