leaf /li:f/ I. n. 1.［c］( pl.leaves ) 叶子；(书刊等的)一张(两面)：turn over a new leaf 翻开崭新的一页，悔过自新：Apparently he’s turned over a new leaf and he’s not smoking any more.很明显他要开启新的生活，再也不吸烟了。2. ［u］薄金属片: gold leaf 金箔‖II. vi. 用于短语动词 leaf through翻页浏览：The waiting room was full of people leafing through magazines.候车/机/船室里人很多，大家在翻阅着杂志。