thirteen years old
Том играет на пианино с тринадцати лет.
Tom has been playing the piano since he was thirteen.
Том-мальчик тринадцати лет.
Tom is a boy of thirteen years old.
Тому не больше тринадцати лет.
Tom is no more than thirteen years old.
I've been working since I was thirteen.
Тому тогда было около тринадцати лет.
Tom was about thirteen years old at the time.
Я Тома с тринадцати лет знаю.
I've known Toma since she was thirteen.