edge：something that gives you an advantage over others
邊緣 刀刃 引申為優(yōu)勢(shì)。
A has an edge over B
“maintain”（保持）和“l(fā)ose”（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.
的確默刚，美國(guó)正在失去它的創(chuàng)新優(yōu)勢(shì)這個(gè)假設(shè)是可以質(zhì)疑的响禽。
1) cosult the dictionary
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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.
