You don't. Mangia bene is Italian. In English you say "eat well."
"Eat them!" as a command (imperative) in English is Mangiali! in Italian.
Yes, the ITALIAN RENASSIACE did eat the chocolate cake.
Eat well is the literal English equivalent of 'Mangia bene'. A looser equivalent is 'Have a good meal' or 'Enjoy your food'. In the word by word translation, the imperative 'mangia' means '[you] eat'. The adverb 'bene' means 'well'.
Edward Giobbi has written: 'Edward Giobbi (b. 1926)' 'Edward Giobbi' -- subject(s): Exhibitions 'Pleasures of the good earth' -- subject(s): Cookery, Italian, Gardening, Italian Cookery 'Eat right, eat well--the Italian way' -- subject(s): Cookery, Italian, Italian Cookery, Low-cholesterol diet, Low-fat diet, Recipes, Italian Cooking
they can eat anything
Italian food is very popular.
"Let's go out to eat!" in English is Andiamo a mangiare fuori! in Italian.
"I am well" in English means Sto bene in Italian.
"It's time to eat!" in English means È ora di mangiare!in Italian.
pasta
pasta