So, it sounds more natural if it's asked rather than commanded because of its formality. But if you're talking to a friend, for example, you don't have to be formal and ask a question for it. To say "please say X in Filipino," it would be: "Pakisabi mo ito sa Tagalog." (Substituting the word "ito" to a word that you want translated) Example: "Pakisabi mo "fishes" sa Tagalog." →"Isda." If you're talking to strangers or someone you don't know, you have to ask it as a question because it'd make you sound rude and crazy in the head if you command it lol :3