词典释义：
a flattened structure of a higher plant, typically green and blade-like, that is attached to a stem directly or via a stalk. Leaves are the main organs of photosynthesis and transpiration.
叶，叶子
any of a number of similar plant structures, e.g. bracts, sepals, and petals
叶状物（如苞片，萼片，花瓣）。
[mass noun]foliage regarded collectively
［总称］ 叶。
[mass noun]the state of having leaves
长叶，有叶
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the trees are still in leaf .树现在还长着叶。
[mass noun]the leaves of tobacco or tea
烟叶，茶叶
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[as modifier]
leaf tea .叶茶。
a thing that resembles a leaf in being flat and thin, typically something that is one of two or more similar items forming a set or stack
（似叶子般平而薄的）薄片（尤指两张或一套、一叠此种薄片中的一张）。
a single thickness of paper, especially in a book with each side forming a page
书页，纸页。
[mass noun][with modifier]gold, silver, or other specified metal in the form of very thin foil
金属薄片（如金箔及银箔等）。
the hinged part or flap of a door, shutter, or table
（窗，门等）扇。
an extra section inserted to extend a table
桌子的活动面板。
the inner or outer part of a cavity wall or double-glazed window
空心墙（或双层窗）的内面（或外面）。
(of a plant, especially a deciduous one in spring)put out new leaves
（植物，尤指落叶植物在春季）生新叶，长新叶。
(
翻阅（书页，纸张）
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he leafed through the stack of notes .他翻阅那叠记录。
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shake （或tremble ）like a leaf （of a person） tremble greatly, especially from fear （人）（尤指因恐惧）发抖
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leaf/leaves of sth ...的叶子
真题例句：
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pick leaves 摘叶子
真题例句：
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tea leaf 茶叶
真题例句：
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tobacco leaf 烟草叶
真题例句：
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lotus leaf 荷叶
真题例句：
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turn over a new leaf 重新开始
真题例句：
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take a leaf out of one's book 效仿...
真题例句：
"Old English
