Once the new element is created I can just create and add a text node to wrap the content String, and then replace the original text node with the newly created element (lines 22-24).

一旦创建了新元素，我只要创建和添加文本节点来包装内容String，然后用新创建的元素来替代原始文本节点(第22 - 24行)。

youdao

The growing old of person is just like a place's history, need to add new content in the years.

人的衰老就和一个地方的历史一样，需要在不断增长的岁月中不断增添新的内容。

youdao