How to add a longish paragraph text to a record?

You can make a row taller by changing the row height, in order to enable rows to contain longer paragraphs.

Basically, go to the design page by clicking on the Change Form Design button, and drag the side of the row number to adjust the height, as you would do on other spreadsheet software like Excel. After saving the layout change in the form design mode, the display would also become a longer paragraph input field.

You can also add a paragraph text field from left side panel Add Components > Fields > drag and drop the "Paragraph Text" field.