1. First, open the instance document and set paragraphs in the drawing, as shown in the following figure.
2. Next, you can use the selection tool to select the text box, as shown in the figure below.
3. Then in the pop-up page, click "Window" in the menu bar, as shown in the following figure.
4. Next, select the text in the drop-down menu and click the paragraph again, as shown in the figure below.
5. Then, after the Paragraph panel pops up, select Center Alignment and click, as shown in the following figure.
6. Next, adjust the [spacing before paragraph] or [spacing after paragraph] in the paragraph, so that all the words can be displayed in the text box, as shown in the figure below.
7. Finally, adjust the text box appropriately at this time to complete the operation, as shown in the figure below.