It's a hot day today
一天───one day;今天───today
One day he just upped and left.───有一天他突然离开了。
One day, I'll be rich and famous.───总有一天我会名利双收。
She'll have an accident one day.───她总有一天会出事的。
Suddenly one day Joe decided to see Stanley Millington and ask him for a job at the metal-works.───突然有一天，乔决定去拜访斯坦利·米林顿，求他在金属制品厂里给个工作。
I hope maintains the contact and the heartfelt hope frequently one day to be able to arrive Japan to meet with you.───希望经常保持联络并衷心的希望有一天能到日本与你见面！
However, this expectation is quickly shattered one day while on his way home.───然而，这种假设迅速破坏一天，在他回家的路上。
One day we must say goodbye.
One day she wandered further afield.
One day a larger ship anchored offshore.
Dad,one day,I'll make you proud of me.
One day I'll want to settle down and have a family.