Strange URLs in Acquisition > Websites report

Hi, I don’t understand some data in the Acquisition > Websites report.

As you can see in the image, below the same website (www.site.it in this case), there are 4 URLs: the first two lead to the external site (www.site.it); the last two lead to my site.

So I don’t understand how to exaclty interpret all these 4 rows.

Thanks for your help!