- 你想在这儿待多久就待多久。
You may stay here as long as you like.
- 你想要待多久就待多久。
You can stay as long as you like.
- 祝你们婚姻长长久久、永浴爱河。
I wish you a long and happy married life.
- 很久很久以前住着一个漂亮的小女孩。
Long long ago there lived a pretty girl.
- 雨会下多久?
How long will this rain go on?
- 好久不见。
Long time, no see.
- 你待了多久?
How long did you stay?
- 你离开家有多久了?
How long have you been alienated from your family?
- 你认识她多久了?
How long have you known her for?
- 它将停在那里多久?
How long will it stop there?