Please wake me up at five thirty.

请在5点半叫醒我。

《新英汉大辞典》

They get up at five thirty.

他们早上五点三十分起床。

youdao

Wake me up at five thirty.

请在五点半叫醒我。

youdao

said people need to exercise thirty minutes each day for at least five days to get the health benefits of exercise.

VOA: special.2010.06.08

"Oh,whatever.I guess so. I'll pick you up at Wallace's house at about five-thirty, so you can get ready for trick or treating.

VOA: special.2010.10.30

Late in nineteen thirty-five, workers at several General Motors factories began a "sit-down" strike at their machines to demand better pay and working conditions.

VOA: special.2011.03.31

At five-thirty one morning, he was leaving the motel room where he was staying, to get coffee, when he heard footsteps behind him.

NEWYORKER: The Apostate

Abe (Jordan Gelber) is a portly college dropout who lives, at the age of thirty-five, with his parents (Christopher Walken and Mia Farrow) and works for his father, unhappily, in a commercial real-estate company.

NEWYORKER: That��s Life

Garner died five years earlier, at the age of thirty-nine.

NEWYORKER: Extreme Makeover