i'm planning to purchase tickets from Rome to Florence through Trenitalia.i checked and i found that the train travels from tutte le stazioni to Florence. i'm wondering if it's the same as the Rome Termini Station.because i'm staying near Rome Termini Station.. i'd like to know if it's the same. If it's not, then i'd have to plan to go that station.

I'm also planning to travel from Florence to Venice. the station im planning to stop is Venezia Mestre Station. is it near and convenient to the city center?

thank you.

This means "all stations'. So your search for a schedule is not restricted to a particular station in Rome. However on the schedule details it will indicate the station - Roma TE is Rome Termini.
Edited to add: if another station is shown in red, it just means the train also stops there i.e. if it shows Roma TE in blue, then Roma TIB in red, the train originates at Termini and also stops at Tiburtina - you don't have to anything, just stay on the train.
- Marie

thank you so much...^^

When you say "city center" do you mean city center of Venice, or is there some reason that you want to be at the city center of Mestre, the industrial and suburban outpost of Venice?

If you want to visit the city center of Venice, then you want to go to Venezia Santa Lucia - Venezia SL.

i meant the City of Venice itself.. so i must go to St. Lucia station then.. thank you for the information