leaf的意思是：n.叶叶片叶子有…状叶的有…片叶的(纸)页，张(尤指书的)页薄金属片活动桌板。v.翻…的页，匆匆翻阅。
例句：1.The leaves on the plant had shrivelled up from lack of water.
因为缺水，植物的叶子已经枯萎了。
2、The leaves of certain trees are poisonous to cattle.
某些树的叶子会毒害牲畜。
3、When she leaves school， she wants to learn a trade.
她毕业后想学一门手艺。
