上岁数的楼梯吱呀吱呀的发出家里的人上下楼时应该发出的响声。

The stairs creaked and groaned and made lots of noises that stairs make when a family has gone up and down them for ages.

踩着吱呀作响的楼板，走到房屋向南一边的大窗旁。

Stepping on the floor creaked, walk to the south side of the house beside the window.