These pauses broke up the text so it was easier to read and therefore easier to understand.

这些停顿将信息分开，使人们更容易读懂，也更容易理解。

There was a long pause, broken only by the mournful creak of the floorboards below Harry's feet.

一阵长长的沉默，只有哈利脚下的地板发出哀怨的嘎吱声。