fourth moon of Jupiter; in classical mythology a nymph, mother of Arcas by Zeus, turned to a bear by Hera, from Greek kallistos, superlative of kalos "beautiful," from PIE *kal- (2) "beautiful." Feminized as proper name Callista.
双语例句
1. So too might the Jovian moons Callisto and Ganymede.
木星的卫星木卫四和木卫三也可能有水.
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2. Callisto didn't know what was happening to her.
