How translate meta post fields on backend

I all,
my theme have added into control pannel a new taxonomy named Property, with custom editor. I want to translate labels of the custom fields, how can I do it?

In the attached image I have highlighted the label that I want to translate.
<img src=”http://www.lim-mobiliare.it/theme.jpg”&gt;

Theme used: http://themeforest.net/item/hometown-real-estate-wordpress-theme/9824422