奥秘 àomì secret
secret; mystery
How to remember 奥秘: 奥 mysterious + 秘 secret = secret.
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How it is used
- A profound mystery / secret - 探索宇宙的奥秘 (tànsuǒ yǔzhòu de àomì) probe the mysteries of the universe; 揭开奥秘 (jiēkāi àomì) unveil the secret.
- About deep, wondrous mysteries (nature, science, life), not a hidden fact; loftier than 秘密 (mìmì, secret). Written.