Javafx - 如何在textarea中延迟显示新行？

So I got this new game I am coding. Long story short, there is a textarea in my GUI which acts as an event displayer. When you fight a monster, this textarea is used to display lines of text such as "You deal 3 damages to skeleton" or "Skeleton casts fireball on you and hit you for 5 damages". So I got this new game I am coding. Long story