I've been planning how I'm going to spend the day.

我一直在筹划怎样度过这一天。

《牛津词典》

They arrived at the distribution center on Thursday to spend the day serving food.

他们星期四到达配送中心，花了一天的时间为客人提供食物。

youdao

She would spend the day hanging around street corners.

她常一整天在街头的各个角落闲逛。

《柯林斯英汉双解大词典》

She sat between richly dressed women who were there to spend the day eating sweets and showing off their costly clothing.

VOA: special.2009.09.05

I could spend the whole... Well, we did spend the whole day there yesterday.

我可以一整天……我们昨天就花了一整天在那儿。

考文特花园的魅力 - SpeakingMax英语口语达人

Five of them sustain moderate injuries, one is severely injured, you could spend all day caring for the one severely injured victim but in that time, the five would die.

其中五人伤势不算严重，另外一人受重伤，你可以花上一整天时间,来医治这一名受重伤的病人,但那另外五个病人就会死。

耶鲁公开课 - 公正课程节选

Locals attend mass at their local parishes and spend the day relaxing with family and friends.

BBC: Easter in Rome

In Italy, Grammy-winning singer Andrea Bocelli's birthplace, many people spend the day at church.

CNN: Music stars' favorite holiday traditions

Parents complain that children spend the day with their friends, not with their families.

ECONOMIST: Is the Songkran festival getting out of hand?