[singular]

1. a slight advantage over sb/sth
   （微弱的）优势◆They have the edge in car design.
   他们在汽车设计方面略胜一筹。◆This technology gives us an edge over our rivals.
   这项技术使我们具有超过竞争对手的优势。⨁to gain / have / keep / lose / maintain an edge (on/over sb/sth)
   获得／拥有／处於／失去／保持（超过某人／某事的）优势 ⨁ sth gives you an edge (on/over sb/sth)
   某事使你拥有（超过某人／某事的）优势

●be on ˈedge ●put sb/sth on ˈedgeto be nervous or uncertain
紧张不安；犹豫◆The increasing oil price has put markets on edge.
不断上涨的油价使市场陷入恐慌。