margin [ˈmɑ:dʒɪn]

以下由轻松背单词网站提供

n.页边空白；差额；余地，余裕；边，边缘

the amount by which one thing is different from another

We allowed a margin of 20 minutes in catching the train. 我们有20分钟的余地赶火车。
The village is situated at the margin of a forest. 村子位于森林的边缘。