edge margin

基本解释

The extreme edge or margin; a border.
边，边沿，边缘极端的边线或边缘；
The extreme edge or margin; a border.
处在或者组成边界、边缘。
Opposite horizontal margin constraint. A left float box that has another left float box to its left may not have its right margin edge to the right of the containing block's right padding edge.
对立水平边框限制：如果一个左浮动框的左边还有另一个左浮动框，那么这个左浮动框的右 margin edge 不能在此包含块的右 padding edge 之右。

But some analysts see Toyota gaining an operating margin edge over Honda this year, while Nissan's rapid recovery is too recent to judge the gains' sustainability.
FORBES: Magazine Article
According to the survey, the race is now at 50-47 with Governor Scott Walker leading by 3 points—a lead that is on the edge of the margin of error set at plus or minus 2.8 percent.
FORBES: Final Wisconsin Poll Shows Race Tightening On Last Day! Who Will Win The Ground Game?
Paul, before Denver most polls gave Barack Obama a slight edge, often within the margin of error, but an edge.
NPR: After Conventions, McCain Takes Lead In Some Polls