cosmonautics
/ˌkɒzmə'nɔːtɪks/
n. 
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aftfoot, aftline, aftmost, AFTN, Afton, Aftonian, aftonite, aftont, aftosa, AFTRA,
相似单词
cosmologist, cosmology, COSMON, cosmonaut, cosmonautic, cosmonautics, cosmonette, cosmophysics, cosmoplane, cosmoplastic,