Oda uzun süredir boş.
 - The room has been empty for a long time.
Onlar uzun süredir burada yaşıyor.
 - They have lived here for a long time.
It's been quite ages since we last met.
 - It's been a long time since we last saw each other.
I haven't heard that joke in ages.
 - I haven't heard that joke in a long time.