one day
成語所屬單字day
one day — 慣用語
1. At some time in the future or on a particular day in the past.
1.慣用語
釋義
有一天；總有一天
At some time in the future or on a particular day in the past.
例句
One day, I hope to travel around the world.
One day, she walked into the room and announced her engagement.