her name was on the __of my tongue,but i just couldn"t remember it(rim)为什么不填edge?
问题描述：
her name was on the __of my tongue,but i just couldn"t remember it(rim)为什么不填edge?
答
edge一般指方形物的边缘,比如桌子边缘,阳台边缘,大楼边缘,可引申（比如圆形阳台）.
而且edge可以指锋利物的边缘,比如刀锋除了用blade表达,还可以说成razor edge.
而rim则是指（圆形物体的）边缘,嘴唇自然是圆润的,所以用rim