long
US /lɑːŋ/
UK /lɑːŋ/

1.
2.
long, longue
lasting for a great amount of time, or a longer time than expected or usual
:
•
It was a long and difficult journey.
Ce fut un long et difficile voyage.
•
I haven't seen her for a long time.
Je ne l'ai pas vue depuis longtemps.
1.
longtemps
for a long duration of time
:
•
How long will you be staying?
Combien de temps resterez-vous ?
•
He didn't stay long.
Il n'est pas resté longtemps.