1)I:adj+edge
competitive/slight/decided edge 竞争/微弱/绝对优势
II:verb+edge
give sb/sth ~ 为...的有利条件
gain/have~ 获得/占优势
III:perp+edge
~over 比...有优势
IV:verb
edge+adv
~carefully/cautiously/nervously 小心/谨慎/紧张不安地缓慢移动
2)The new electric car has an edge over its competitive rivals.
3)老员工在工作经验方面比年轻的员工有竞争性优势。
The senior employees have an competitive edge over the young ones with work experience.