translation.en: How do you get back an accurate view of the color on Mars And the answer is not complicated but it's one which I don't want to go through here, other than to say that the communication systems for doing this are really pretty well understood.
translation.zh: 如何才能精确的分析在火星上的颜色呢？ 这个问题的答案并不难， 但我不想在这里再说一遍了， 我想用这个例子说明的是，用来解决这一问题的信息系统， 早已存在了。