for half an hour already
I've been standing in line for half an hour already.
I've been waiting for half an hour already.
I've already been waiting in line for half an hour.
Бениньо, ты уже полчаса торчишь у окна.
Benigno, you've been standing by the window for half an hour.
— Поговори с ней (2002)
Ты здесь уже полчаса и только смотришь.
You've been here for half an hour and you're just watching.
— Похитители велосипедов (1948)
I've been waiting for the bus for half an hour already.
They've been waiting for me for half an hour already.
Она стоит в очереди уже полчаса.
She has been standing in line for half an hour already.
Я уже полчаса пытаюсь тебе объяснить.
I've been trying to explain it to you for half an hour already.
— Жертвоприношение (1986)