Unlike months or years, these seven-day groupings have no real basis in astronomy.

与月或年不同，这些七天的分组在天文学上没有实际的存在依据。

But it would be a mistake to infer that they are dependent upon mind, not real while we see them, or not the sole basis for our knowledge of the external world.

但是，如果我们推断它们依赖于心灵， 当我们看到它们时它们不是真实的， 或者不是我们了解外部世界的唯一基础， 那将是错误的。