ROSSA DALLA VERGOGNA = when u are shy, if somebody talk with u, you became red in ur face bacause u fell shame. BARCA A REMI (anche barca a vela, barca a motore)= barca (che va) a remi, that is the same "boat that goes with the oars" (barca che va con i remi) but I can't explain u why 'a' instead 'con i'. DI ARANCIATA = because 'i' final letter of preposition DI is a wovel + 'a' the initial letter of the word 'aranciata' that is another wovel. So when there are 2 letters wowels (one ending and one initial) u cut the ending wovel and put the 'apostrofo', like in the article LA + ANATRA (femal name) = l'anatra.