| 单词 | metonic cycle |
| 释义 | > as lemmasMetonic cycle Metonic cycle n. the cycle of 19 tropical years (conventionally equated to 235 synodic months) in which the moon returns to almost the same apparent position relative to the sun, so that new and full moons occur at the same dates in the corresponding year of each cycle. Also †extracted from Metonicadj.< as lemmas |
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