Let's break it down:
* Tengo: This is the first-person singular present tense of the verb "tener," which means "to have."
* treinta y cuatro: This means "thirty-four."
* años: This means "years."
So, the entire phrase translates to "I have thirty-four years." In English, we usually say "I am thirty-four years old," but the Spanish phrase directly translates to "I have thirty-four years."