jQuery remove（）和其他方法工作一次，但相同的代码不能反向工作

This is a little long, so stay with me. At the request of my teacher, I'm building a pile of text, some of which is hidden, and I want to add a "more" text at the end. When clicking it, that line is removed and replaced with a "less" text, the hidden text is revealed, and if I click the "less" text it reverts to the original position. Here's what I have so far:This is a little long, so stay with me. At the