He fell head over heels in love with her the moment they met.

他们相遇的那一刻，他就深深地爱上了她。

They are still head over heels for each other after twenty years of marriage.

结婚二十年后，他们仍然深爱着彼此。

He was head over heels in debt after his business failed.

他的生意失败后，他完全陷入了债务。

The children were head over heels with excitement about the trip to the amusement park.

孩子们对去游乐园的旅行欣喜若狂。