单词	periastron
释义	periastron noun peri·​as·​tron ¦perē¦astrən, -ˌsträn plural periastra -strə : the point in the orbit of a star or other celestial body where it is nearest to the primary star with reference to which it is revolving the periastron of a comet compare apastron Word History Etymology New Latin, from peri- + Greek astron star
随便看	crenellation crenellations crenelle crenelled crenelles crenelling crenellé crenels crenitic creno- Crenothrix crenshaw crenshaw melon crenshaws crenula crenulae crenulate crenulated crenulation crenulations creo- creodont Creodonta creodonts creole

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