Those days are long gone now.

那些日子已经过去了。

They were expensive in those days.

那时候它们很贵。

Families in those days were quite big.

那个时代的家庭都很大。

In those days, he was just a child.

当年，他还是个小孩子。

In those days, life was slower-paced.

那时候，生活节奏比较慢。

In those days, people often wrote letters.

那时候，人们常常写信。

In those days, we played outside every day.

那时候，我们每天都在外面玩。

In those days, we didn't have mobile phones.

那时候，我们没有手机。

Looking back on those days, I feel nostalgic.

回首那些日子，我感到很怀念。

In those days, we often went fishing together.

当年，我们常常一起去钓鱼。