Noun:

1. the second largest of Jupiter's satellites

callupn.电台呼叫(征召)callvt.呼叫；打电话；把 ...称为n.打电话；访问；召唤；呼叫；把 ... 看作vi.呼叫；(短暂的)拜访call cousins with攀亲戚,称兄道弟call release time呼叫释放时间call announcement转移通知calling interface调用接口calling TS-user主叫的终端适配器用户call releae delay呼叫释放时延Calliteara hoenein.缨丽毒蛾calling frequency呼叫频率called out search应召搜索Callipta borealisn.北域圆肩肖叶甲

1. Icy Callisto appears to be the most heavily cratered object in the solar system.
   冰冻的木卫四看上去像是太阳系中表面坑洞最多的一个星体。
2. Ganymede, Europa and Io are on one side of Jupiter, while Callisto is on the other side.
   木卫三，木卫二和木卫一在木星的一边，而木卫四却在另一边。