Radio 4 in Four - How many words does it take to learn a language? - ÃÛÑ¿´«Ã½ Sounds

Radio 4 in Four - How many words does it take to learn a language? - ÃÛÑ¿´«Ã½ Sounds
How many words does it take to learn a language?
The importance of frequently used words when learning an additional language.