此次飞行将需要四个小时。

The flight will take four hours.

《柯林斯英汉双解大词典》

她每天晚上只睡四个小时。

She only sleeps for four hours a night.

《牛津词典》

乘客从巴黎到马赛只需四个小时。

The passengers can travel from Paris to Marseilles in only four hours.

youdao

But, it's about a four-hour film, and it's called The Sorrow and the Pity and it's about Clermont-Ferrand, which is in the Massif Central here.

那电影大概四个半小时,叫哀伤与怜悯,是关于克莱蒙费朗的,在中央高地这里

耶鲁公开课 - 1871年后的法国课程节选

We practice six days a week, usually, you know, three to four hours a day,

通常我们每周练习六天，你知道，每天三到四个小时，

赛艇项目很流行 - SpeakingMax英语口语达人

And if you go there, then it takes maybe three, four hours

如果你去那里，可能会花掉你三到四个小时，

做头发是免费的 - SpeakingMax英语口语达人