| 单词 | diurnal arc |
| 释义 | diurnal arcnoun Astronomy.the portion of the diurnal circle that is above the horizon at a given point. Compare nocturnal arc. Words nearby diurnal arcDiu, diuresis, diuretic, Diuril, diurnal, diurnal arc, diurnal circle, diurnal motion, diurnal parallax, diuron, div Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 |
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