英语语法分析

Pluto has a moon, Charon, half the size of the planet.

冥王星唯一的卫星卡戎，大小是冥王星的一半。

Charon, I need you to go into that chamber and turn on the purifier.

卡戎，我需要你进入那个房间打开净水装置。

We are eager to know how a system such as Pluto - Charon could form .

我们很盼望能了解像冥王星-冥卫一这样的系统如何形成。