" Jupiter's biggest moon is Ganymede, not Callisto, " she said, pointing over Ron's shoulder at a line in his Astronomy essay, " and it's lo that's got the volcanoes."

“木最大是木三，不是木，”从罗恩身后指着他那篇文学论文中一行文字说道，“有火山应该是木一。”

The next biggest moon is Callisto, at 4800 km in diameter.

第二大是木（卡利斯托），直径约4800公里。

The ESA took the opportunity to do a test run of Juice's instruments, which it will use to look for molecular signatures of habitability on the moons Europa, Ganymede and Callisto.

欧洲航局借此机会对 Juice 仪器进行了测试，这些仪器将用于寻找木二、木三和木上适宜居住分子特征。

In 1610, for example, Galileo used the first telescope to discover Jupiter's moons Io, Callisto, Europa, and Ganymede — now known as the Galilean Moons.

例如，1610 年，伽利略用第一台望远镜发现了木木一、木、木二和木三，这些现在被称为伽利略。

Juice will investigate three of the so-called Galilean moons-Callisto, Europa and Ganymede, all of which are thought to have subsurface oceans.

“果汁”探测器将调查三颗所谓伽利略——木、木二和木三，这三颗都被认为拥有地下海洋。

The four largest moons, Io, Europa, Ganymede, and Callisto, are large enough to be seen from Earth with a telescope.

从地球上就可以用望远镜看到最大颗，木一，木二，木三，木。

They're called Ganymede, Callisto, and Europa.

这几个分别叫木三、木和木二。

That means the surface is very old, maybe as old as Callisto itself.

这意味着它表面非常古老，可能和木同岁。

Callisto orbits Jupiter farthest out of the four biggies, almost two million km away.

在个大行中，木公转轨道离木最远，约达200万千米。

The new one that was huge was Callisto Protocol.

最新那个大作是《卡利сто协议》。

So we've got around Jupiter, we've got Europa, Ganymede and Callisto all seem to have the possibility of subsurface oceans.

所以在木周围，我们有欧罗巴、甘尼米德和卡利斯托似乎都有地下海洋可能性。