This is his secret collection, and he rarely shows it to others.

这是他珍藏的秘籍，从不轻易给别人看的。

youdao

I will learn this secret of the ages: Weak is he who permits his thoughts to control his actions; strong is he who forces his actions to control his thoughts.

我要学会这个千古秘诀：弱者任思绪控制行为，强者让行控制思绪。

youdao

According to Xie Xianpeng around revealed that he privately created a "bath and physical gymnastics," This is his Old Firm secret.

据谢贤身边人透露，他私下自创一套“浴缸强身操”，这便是他老而弥坚的秘诀。

youdao

This is just to conceal his secret identity.

NPR: Excerpt: 'The Mysterious Secret of the Valuable Treasure'

The trouble with this conspiracy theory is that Rick made no secret of his views in 2009, which he outlined in widely distributed public documents.

FORBES: The Phony CLASS Act Scandal

He is out of contract this summer and has made no secret of his desire to remain at the club.

BBC: Motherwell boss Craig Brown still chasing Everton duo