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	gutter gutter away gutter ledge gutter out gutter press gutter stick guttered guttered out guttering guttering out gutterings gutterman guttermen gutters gutters out guttersnipe guttersnipes guttersnipish guttide ira ira fu ira furor brevis est iracund iracundity irade

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