leaf

1. N-COUNT The leaves of a tree or plant are the parts that are flat, thin, and usually green. Many trees and plants lose their leaves in the winter and grow new leaves in the spring. 叶子[usu pl, also 'in/into' N]

In the garden, the leaves of the horse chestnut had already fallen. 园子里的七叶树已经落叶了。

2. N-COUNT A leaf is one of the pieces of paper of which a book is made. 一页

He flattened the wrappers and put them between the leaves of his book. 他抚平了包装纸，把它们夹在了书页中间。

3. PHRASE If you say that you are going to turn over a new leaf, you mean that you are going to start to behave in a better or more acceptable way. 开始新的一页

He realized he was in the wrong and promised to turn over a new leaf. 他认识到自己错了，承诺要重新开始。