在下午的英文怎麼寫

例句：

一天的教學在下午4點左右結束。

The teaching day finishes at around 4pm

哦，那些書！我本來要在下午之前收起來的。

Oh, those books! I meant to put them away before this afternoon.

人體生物鍾會讓我們在下午1點到3點之間感覺沒精打采、昏昏欲睡。

The body's natural rhythms mean we all feel dull and sleepy between 1 and 3pm.