a teenager is someone aged 13 (thirteen) to 19 (nineteen). = a teen, a youth, a young person

the likes and dislikes : what people like and dislike

to be concerned : to be worried

Nouns	Adjectives >> INVARIABLE
billions of Euros	eight billion Euros (€8b)
millions of dollars	ten million dollars ($10m)
thousands of hours	two thousand hours (2000)
hundreds of people	five hundred people (500)

The purchasing power (or buying power) is what one can buy with one's money / wage / salary / income.

one out of four = 25%

by some estimates : according to …

to appeal : to attract, to seduce (cf : sex appeal)

a medium / a media (plural : media)

top <> bottom

Prime time (a prime-time program) is the moment when TV is watched by the largest audience.

to target : to aim at

Teenagers are targeted by advertisers because they are vulnerable and influenceable.

a goal : an aim : a purpose

global = world (adj)

Thanks to the media and the Net, the world has become a global village where the news travels instantaneously.

sneakers : sports shoes

leisure [U]<> work

Watch out! Be careful! Take care !

eagerly : with impatience