n (1)叶子(part of a plant growing from the side of a stem，usu green，flat and thin)[C]：blow off the～ves 吹落树叶;put forth new～ves 长出新叶;In autumn，most trees shed their～ves. 在秋季，树木大都要落叶。L～ves fall off/rustle/flutter past the window/are turning yellow. 叶子凋落/沙沙响/从窗前飘过/在变黄。sweep up the dead/dry～ves 扫掉枯叶;a bay/maple/tobacco/tea～一片月桂树/枫树/烟/茶叶;lettuce/cabbage～ves 莴苣/卷心菜叶;the fig～无花果树叶;遮羞布;trees thick with～ves 枝叶茂密的树木;All the trees are in～now. 现在树都披上了绿装。Beijing in～绿树成荫的北京;the fall of the～秋天;come into～长叶，发芽;

(2)书的一张(即两页)(sheet of paper，esp in a book)[C]：There is a～missing in the book. 这本书缺一张。tear a～out of a book/a notebook 从书/笔记本里撕下一张; turn the～ves of a telephone book 翻阅电话簿;turn over a～翻过一页;a flower pressed between the～ves of a book 夹在书页之间的花;

(3)金属箔(thin sheet of metal)[U]：a frame covered with gold～包上金箔的框架;

take a leaf out of sb's book 效仿某人：If you want to succeed，take a～out of my book. 如果你想成功，就走我的路。

turn over a new leaf 翻开新的一页;重新开始;改过自新;He decided to turn over a new～and study harder. 他决定重新开始，更加努力地学习。

→′leafage n(总称)叶子;′leafless adj 无叶的;′leafy adj 叶茂的;′leaflet n 小叶;传单;

vi长出叶子(put forth leaves)[I]：The trees～(out) in spring. 树在春天长叶。

leaf through (v prep)很快地翻阅(vt)：casually～through a book/a magazine and look at the illustrations 随便地翻阅一本书/杂志看看插图