Show play area Cursor: If this is enabled then the play areaboundaries are displayed at the tip of the pointer beam in the current pointer colour.
(显示游玩区光标)：如果这个启动，游玩区界限就会在光束指针的顶端显示出来，颜色和当前指针颜色相同。
2
That article outlined existing work in this area, and defined the boundaries of the project.
那篇文章列举了该领域已经进行的工作，并定义了这个项目的边界。
3
What’s puzzling is that the projected size of this universe is smaller than the area we can actually observe. In other words, our visibility exceeds the boundaries of the universe.