| 单词 | 人不知， 鬼不觉 |
| 释义 | 人不知， 鬼不觉人不知， 鬼不觉[rén bù zhī guǐ bù jué]1.■not known by men or perceived by ghosts -- to do in complete secrecy; Not a soul had any suspicion of what one had done.; without anyone noticing |
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