edge：something that gives you an advantage over others
边缘 刀刃 引申为优势。
A has an edge over B
“maintain”（保持）和“lose”（失去）搭配
It seems the US is losing its immigrant edge, but it has maintained its military edge.
Indeed, the assumption that America is losing its innovative edge is open to question.
的确，美国正在失去它的创新优势这个假设是可以质疑的。
1) cosult the dictionary
图片发自简书App
图片发自简书App
图片发自简书App
2) The new electric cars will have an edge over the rivals.
3）We are not sure which company will have an edge over others in Artificial Intelligence.
He made an assumption that robots will have an edge over human beings on various kinds of jobs.
