| 单词 | nautical almanac |
| 释义 | nautical almanac [`nȯd·ǝ·kǝl `ȯl·mǝ´nak] NAVIGATION A book published annually by the governments of the principal maritime nations which contains the astronomical data required for navigation by observations of celestial objects; an abridged version is known as the abridged nautical almanac. |
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