For example you can display objects as wire-frames, display only the corners of an object and so on. You can even make objects transparent, with the following Settings.
例如你可以用线框效果显示对象，只显示对象的边角等等。
2
He was wearing new glasses with gold wireframes.
他戴着一副新的金丝框眼镜。
《柯林斯英汉双解大词典》
3
Mockups and wireframes are greatly useful to create layouts with lot of flexibility.