他与总统闭门进行了几乎大半天的密谈。

He was closeted with the President for much of the day.

妇女曾经在手工研磨谷物上花上大半天的时间。

Women once spent long hours grinding grain by hand.

上午，家里的主妇们会花上大半天时间准备午餐。

The housewives would spend part of their morning cooking that meal.

我们游览了大半天，大饱眼福，我很高兴，因为这是我第一次上动物园。

We toured most of the day, feast for the eyes, I am very happy because this is my first time at the zoo.