| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024mail′ flag′, [Naut.]- Nauticala flag of the International Code of Signals symbolizing the letter Y, flown alone by a ship to indicate that it is carrying mail: a square flag with red and yellow diagonal stripes.
- Nauticalany of various other flags indicating that a ship is carrying mail.
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