我们知道，这些物体是存在的，因为使用射电望远镜已经观察到了几个中子星。

We know that these objects exist because several have been found using radio telescopes.

youdao

我们知道，这些物体是存在的，因为使用射电望远镜已经观察到了几个中子星。

We know that these objects exist because several have been found using radio telescopes.

youdao