Planetesimal
[,plæni'tesiml]
解釋/意思:
(noun.) one of many small solid celestial bodies thought to have existed at an early stage in the development of the solar system.
錄入:山姆--From WordNet
[,plæni'tesiml]
(noun.) one of many small solid celestial bodies thought to have existed at an early stage in the development of the solar system.
錄入:山姆--From WordNet