regrede
动词 v.
英文释义
动词 v.
-
To go back; to retrograde, as the apsis of a planet's orbit.
— […] the instantaneous parabola decreases in magnitude and descends in position throughout the entire motion, while its axis regredes during the ascent and progredes during the descent of the particle.
词源
From Latin regredi (“to go back”). Compare regrade, regress.
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数据来源: Wiktionary