A trellis provided shade and defined the edges of the courtyard.植物攀爬棚既提供了阴凉，又划出了庭院的边界。You could even put a trellis on your walls and train plants to grow up it.你甚至可以在墙上搭置棚架，让植物攀缘其上。You could put a trellis on your wall and train plants to grow up it.你可以在墙上搭个棚架，让植物沿着它往上长。