[Risolto] I want to modify the translation of two specific strings, namely "Sales price" and "Regular price"

WooCommerce Multilingual enables us to set unique prices for different currencies. I want to modify the translation of two specific strings, namely "Sales price" and "Regular price," which are displayed under variations.

However, despite activating the "look for strings while pages are rendered" feature, I am unable to locate these strings.

Here's a visual reference of what I'm trying to achieve: [link nascosto.

How can I accomplish this task?