On a cosmic, a universe that was once thought to be a few thousand years old, and to consist of a handful of orbs circling Earth against a fixed backdrop of stars, has been shown to have an age of 13.37bn years——a value believed to be known to within a precision of three parts in a thousand
最后的believed to be known to为什么后面不加个宾语
最后的believed to be known to为什么后面不加个宾语