Mind map automatic line wrapping 脑图自动换行

[KongNan]

I'm using very long text in a mind map, and it doesn't display as a paragraph but as a long line. When I drag its outline to make it a square, the nodes below it don't move aside; and once I start manipulating other nodes, it reverts to being a long line. Am I doing something wrong? Thank you!!! (Sorry, my English is very poor.)

我在脑图中使用很长的文本，它不会显示为段落的样式而会显示为很长的一行。 当我拖动它的外框变成方形时，它下方的节点并不会让开；并且一旦我开始操作其它节点，它又变回很长的一行了。是我操作错误了吗？谢谢！（抱歉我英文很差）