单词	astrogation
释义	astrogation noun as·​tro·​ga·​tion plural -s : the science or art of navigating a spaceship : space navigation Word History Etymology astr- + -gation (as in navigation)
随便看	OK ok'd OK'd OK'ing ok'ing oka okanagan Okanagon okanagons Okanogan okapi okapiae okapias okapis okas Okavango okay okay by me Okayama okayed okayer okayest okaying okays okayyer

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