名詞 leaf:

1. the main organ of photosynthesis and transpiration in higher plants
   同義詞：leafage, foliage
2. a sheet of any written or printed material (especially in a manuscript or book)
   同義詞：folio
3. hinged or detachable flat section (as of a table or door)

動詞 leaf:

1. look through a book or other written material
   同義詞：flick, flip, thumb, riffle, riff
2. turn over pages
3. produce leaves, of plants

1. I'm shaking like a leaf.
   我混身都在發(fā)抖。
2. The falling leaf spiralled to the ground.
   落葉盤旋著飄到了地上。
3. If you focus the sun's rays through a magnifying glass on a dry leaf, it will start to burn.
   用放大鏡把陽光聚到乾葉子上，葉子就能燃燒。
4. The maple leaf is the emblem of Canada.
   楓葉是加拿大的象征。
5. Not a leaf nor an insect stirred.
   不單是樹葉，連個蟲子都不動。
6. I saw him take a leaf out of the book.
   我看見他從書上撕下一頁。
7. This plant has green leaves throughout the year.
   這種植物終年常青。
8. Trees begin to have leaves in spring.
   春天，樹木開始長葉子了。

leaf

n.（名詞）
【復數(shù)】 leaves[lôvz]
A usually green, flattened, lateral structure attached to a stem and functioning as a principal organ of photosynthesis and transpiration in most plants.
葉子：連接在莖上的結(jié)構(gòu)，通常是綠色、扁平且側(cè)生，在多數(shù)植物中是光合作用和呼吸的主要器官
A leaflike organ or structure.
葉狀的結(jié)構(gòu)：象葉子一樣的器官或結(jié)構(gòu)

Leaves considered as a group; foliage.
葉子的總稱；簇葉
The state or time of having or showing leaves:
枝葉繁茂：有葉或顯示出葉子的狀態(tài)或時間：
例句：
trees in full leaf.
長滿葉子的樹木

The leaves of a plant used or processed for a specific purpose:
有特別用途的葉：為特定目的而使用或加工的植物葉子：
例句：
large supplies of tobacco leaf.
煙葉供應量很大

Any of the sheets of paper bound in a book, each side of which constitutes a page.
葉，張：裝訂在書中的紙張，每一面為一頁
A very thin sheet of material, especially metal:
金屬片：一種非常薄的片狀物質(zhì)，尤指金屬的：
例句：
silver leaf.
銀箔

A hinged or removable section for a table top.
活動桌面：桌子上部有鉸鏈連接或可移動的部分
A hinged or otherwise movable section of a folding door, shutter, or gate.
扇：折疊門、百葉窗或大門上裝有鉸鏈或可移動的部分
One of several metal strips forming a leaf spring.
簧片：構(gòu)成片簧的幾個金屬片中的一個
v.（動詞）
leafed,leaf.ing,leafs
v.intr.（不及物動詞）
To produce leaves; put forth foliage:
長葉：生出葉子；長葉：
例句：
trees just beginning to leaf.
剛發(fā)芽的樹木

To turn pages, as in searching or browsing:
翻書頁：翻頁，如在搜尋或瀏覽中：
例句：
leafed through the catalog.
瀏覽目錄

v.tr.（及物動詞）
To turn through the pages of.
逐個翻頁

來源：
Middle English
中古英語
from Old English lôaf
源自 古英語 lôaf