fifty years old
William a cinquante ans maintenant.
William is fifty years old now.
Ce n'est pas si facile d'apprendre une nouvelle langue après cinquante ans.
It’s not so easy to learn a new language after the age of fifty.
Our school is fifty years old.
C'est le vieux qui a planté cet arbre il y a cinquante ans.
It was the old man who planted this tree fifty years ago.
On voyage plus facilement aujourd'hui qu'il y a cinquante ans.
It is easier to travel today than it was fifty years ago.
My father is fifty years old.
Fifty years old.
Ils fêtent leurs cinquante ans de mariage.
They are celebrating their fiftieth wedding anniversary.