释义
n. (时间,金钱)富余,利润,页边空白,边缘
例句
1. He beat the other runners by a margin of ten seconds. 他比其他运动员早10秒钟到达终点。 2. The little boy likes to make notes in the margin of books. 小男孩喜欢在书页空白边上做笔记。