| 单词 | 天知地知， 你知我知 |
| 释义 | 天知地知， 你知我知天知地知， 你知我知[tiān zhī dì zhī nǐ zhī wǒ zhī]1.■No one knows besides you and me.; between ourselves; between you and me and the gatepost; There's no one except you and me who know about it. |
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