astrogation
/ˌæstrə'ɡeiʃən/
n. 
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ex, ex-, ex gratia, ex libris, ex officio, ex post facto, exa, Exabyte, exacerbate, exacerbation,
相似单词
Astrocytus, astrodome, astrodynamics, astrofibroblastoma, astrogate, astrogation, astrogator, astrogeodesy, astrogeodynamics, astrogeography,