once upon a time

US /wʌns əˈpɑːn ə taɪm/
UK /wʌns əˈpɑːn ə taɪm/
"once upon a time" picture
1.

很久很久以前

used at the beginning of a traditional story to signify that it took place in the distant past

:
Once upon a time, there was a beautiful princess who lived in a grand castle.
很久很久以前,有一位美丽的公主住在一座宏伟的城堡里。
The storyteller began, "Once upon a time, in a land far away..."
讲故事的人开始说:“很久很久以前,在一个遥远的国度里……”