Learn Italian: Il treno arriva dal centro della città. - The train arrives from the city center.

dal is an articulated preposition made by combining da (from) and il (the). Because centro (center) is a masculine singular noun, it takes the article il. When da and il meet, they merge into dal.

Why does the Italian sentence say della città instead of just città like in English?

In English, we can put two nouns together to make phrases like "city center." Italian doesn't do this. Instead, it uses di (of) to show the relationship, literally saying "the center of the city." Here, di combines with la (the) to make della.

Could I just say arriva da il centro instead of dal centro?

No, Italian requires you to merge prepositions like da and di with definite articles like il and la when they are right next to each other. You cannot leave them as two separate words.

Why does città have an accent mark on the last letter?