单词 | evection |
释义 | Word Frequency evection(ɪˈvɛkʃən) noun irregularity in the moon's motion caused by perturbations of the sun and planets Derived forms evectional (eˈvectional) adjective Word origin C17: from Latin ēvectiō a going up, from ēvehere to lead forth, from vehere to carry |
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