海卫一

天文学家知道冥王星与海卫一拥有几乎相同的体积、质量与密度。

Astronomers know that Pluto and Triton have nearly the same size , mass , and density .

冥王星与海卫一几乎同样大小，同样密度。

The planet Pluto and the moon Triton have almost the same size and density .

从照片看，海卫一是一颗粉红色与白色相间的美丽的冰球。

Pictures of Triton show a beautiful pink and white ball of ice .

包括木星的卫星：木卫四和木卫三、海王星的海卫一，甚至是冥王星。

including Jupiter 's moons Callisto and Ganymede , Neptune 's Triton , and even Pluto .

就海卫一来说，夏季的太阳使表面上薄薄的一层冻结的一氧化碳升华为气体。

In Triton 's case , the summer sun sublimates a filmy surface layer of frozen carbon monoxide into gas .

海卫一似乎有过一段历史，就像八月带回家的冰淇淋：冻结、融化、再冻结。

Triton seemed to have a history like ice cream carried home in August : frozen , melted , then frozen again .

如果你现在正站在海卫一的南半球，你将会欣赏到该卫星上的仲夏景色。

If you were standing in the southern hemisphere of Triton right now , you 'd be enjoying the peak of summer .

同时，多亏了欧洲南方天文台的这个录像片，你可以到海卫一上进行一次模拟之旅。

In the meantime , you can make a virtual visit to Triton , thanks to this video from the European Southern Observatory .

按照拥有的水量排序，从少到多依次是：土卫二，土卫四，地球，木卫二，冥王星，海卫一，木卫四，土卫六和木卫三。

In order of how much water they have , from the least to the most , they are : Enceladus , Dione , Earth , Europa , Pluto , Triton , Callisto , Titan , and Ganymede .