■ edge

1) （物质的或抽象的）边缘。

• on the edge of a cliff在悬崖的边缘
• on/at the edge of starvation处于饿死的边缘
• They brought the country to the edge of ruin.他们把国家带到了毁灭的边缘。

基于这个基本词义的一个成语 on the edge of one's seat，表示“不能好好地坐在座位的正中而只能坐在边上”亦即“心情紧张”、“提心吊胆”。

• This film will have you on the edge of your seat.这部片子会让你看得提心吊胆。

2) （物质的）锋芒。

• sharpen a knife's edge把刀锋磨快。

3) （刀刃的）锐利性。

• put an edge to a knife把刀锋磨快。

4) （抽象事物的）锋芒、尖锐性。

• He'll get the edge of my tongue. 或 I'll give him the edge of my tongue.我要好好地训他一顿。
• The sandwich took the edge off my hunger.吃了那块三明治，我的肚子就不那么饿了。
• Her smile took the edge off her critical remarks.她的微笑，和缓了她的批评意见。
• His voice had a menacing edge to it.他的声音带有一种咄咄逼人的调子。
• The performance lacked edge.这场演出，缺乏劲头。
• This article lacked critical edge.这篇文章缺乏尖锐的批判性。

5) 优势。

• He has a definite edge over his rivals.他比自己的劲敌们有一个明显的优势。
• By doing so, they could stay on the leading edge of technology.这样做，他们就能保持科技上的领先优势。