I took a half day off yesterday.

昨天我休假半天。

《牛津词典》

You might lobby for a half day per week to study and play with new technologies.

您可以每周腾出半天来学习和应对新技术。

youdao

Instead of asking for a whole day off for your move, compromise and ask for a half day off.

与其一次性请一天假搬家，还不如折中一下只请半天。

youdao

She says people would not even notice a difference in taste with three grams, or one-half teaspoon, less salt per day.

VOA: special.2010.01.27

Maybe you find yourself in Las Vegas and you get married for a day and a half and then realize that this wasn't such a good idea.

你可能在拉斯维加斯,一天半内闪婚,突然意识到好像不太妥。

耶鲁公开课 - 心理学导论课程节选

Again, this probably should be cleaned up and in a couple of weeks we'll spend a day or half period trying, to clean it up and make it somewhat more precise.

以上内容还有待梳理,未来两周我们将会花上一天半左右的时间,试着梳理这些内容,使其更加精确

耶鲁公开课 - 死亡课程节选

Women regularly spent a half day getting their hair "permanented" for a ball.

WSJ: What Life Was Like in 1776

After breakfast, you will be introduced to meditation before spending a half day practicing the ancient art in the monastery.

WSJ: Memories Worth 1,000 Pradas | Weekend Journal Gift Guide | Travel

It usually takes several hours to a half day to print a copy of a human organ depending on its size.

WSJ: Next to Use 3-D Printing: Your Surgeon