| 词汇 | read between the lines |
| 词源 | read between the lines. Cryptographers commonly used a code whereby the secret message in a letter or other document could be discerned only by reading its alternate lines. This practice, and possibly the use of invisible ink to write messages between the lines of a letter, suggested to read between the lines, which by 1865 meant to discern the underlying fact or inten- tion in any document or action. |
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