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单词 leaf
释义

leaf /liːf//lif/

英汉-汉英词典
  1. n. 叶子;(书籍等的)一张;扇页
  2. vi. 生叶;翻书页
  3. vt. 翻…的页,匆匆翻阅
词组 | 习惯用语
leaf blade 叶片
in leaf 有叶子的;叶茂的;长满叶子的
leaf area 叶面积;叶面
tobacco leaf 烟叶
lotus leaf 荷莲叶
maple leaf n. 枫叶
leaf surface 叶面
tea leaf 茶叶
leaf spot [植物病理学]叶斑病
leaf spring 弹簧片,钢板弹簧
mulberry leaf 桑叶
leaf sheath 叶鞘
gold leaf n. 金叶;金箔
leaf margin 叶缘
red leaf 红叶病;红色的叶子
leaf base 叶基
leaf node 叶节点
door leaf 门扉,门扇
loquat leaf 枇杷叶,枇杷叶粉末
leaf through 迅速翻阅
英语例句库
  1. 2Mean values of leaf natality(A)and leaf mortality(B).
    图2叶出生率(A)和死亡率(B)的平均值 Fig.
  2. He pinched the leaf between his thumb and forefinger.
    他将叶子捏在拇指和食指之间。
  3. Here, two leafcutter ants dismantle a leaf in Peru's Manu National Forest.
    照片中,秘鲁的摩奴国家森林里两只南美切叶蚁正在啃切一片树叶
  4. The trees leaf out in the spring.
    树在春季长叶
  5. I dudder and shake like an aspen leaf.
    我发哆嗦和颤抖就像是一片摇晃的树叶
  6. Leaf base often narrowed into a petiole, spurless.
    叶基部通常缩小成为叶柄,无距。
  7. Cut the stem cleanly, just beneath a leaf joint.
    把茎切整齐点,正好切在叶根下。
  8. He saw a shiny green beetle on a leaf.
    我看见树叶上有一只闪闪发光的绿色甲虫。
  9. Unlike a leaf, a cladode has buds on its surface.
    但节与节间明显,节上能分枝,生叶和开花。
  10. Capsule without apiculus; leaf blade apex rounded, margin small crenate.
    没有细尖的蒴果;先端圆形的叶片,小具圆齿的边缘。
  11. This sudden warmth is bringing all the trees into leaf.
    天气突然变暖, 所有的树都长出了叶子
  12. Before I went into the exam room I was shaking like a leaf.
    进考场前我紧张得直哆嗦。
  13. The insect settled on a leaf.
    一只昆虫落在一片树叶上。
  14. Leaf blade leathery; pistillode conic to cylindric; drupes indehiscent, enclosed by persistent calyx lobes.
    叶片卵形到近圆形,先端钝,短渐尖,或骤尖;瘦果宽卵形或近球形,略带紫色的点或瘤状。
  15. The larva had the habit of multitudinous pupating on the reverse of the leaf.
    幼虫有群集化蛹的习性,多化蛹于叶背处。
  16. The russet woods stood ripe to be stript, but ware yet full of leaf.
    黄褐色的树木虽已熟的可以折枝剥皮,却仍然枝繁叶茂。
  17. Not a leaf moved.
    树叶一动也不动。
  18. He leafed through the music.
    他一张张地翻乐谱。
  19. The boron deficiency plant appears inter-venial chlorosis, thickening, crisping leaves and increased leaf weight ratio (LWR).
    缺硼使叶重比(LWR)提高和叶片脉间失绿、变厚、变脆。
  20. ObjectiveTo study the hypoglycemic effect of extracts respectively from Leucaena root, trunk, leaf, seed and beanpod.
    目的研究银合欢根、干、、子及豆荚的降血糖作用。

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原声例句
《绝望的主妇》第五季

Well, i have turned over a new leaf.

我可跟从前大不一样了。

美食家基地

Twill? Banana leaf. - The leaf, yeah.

斜纹布吗?香蕉叶。- 叶子,是的。

VOA常速英语_生活

So, this has a slightly larger leaf.

这种咖啡的叶子稍大。

金典电影

The epaulets with the silver oak leaf.

有银橡树叶的那对。

儿童睡前故事

Please, Sue, I want to see the last leaf.

求你了,苏,我想看看最后一片叶子

CNN 10 学生英语 2018年5/6月合集

When he caught a leaf, it all made sense.

当他抓住一片叶子时,一切都变得有意义了。

当月 CNN 10 学生英语

Think costumes, think leaf blower, trash bag juggling.

有服装表演、吹叶机还有垃圾袋杂耍。

英语小霸王

Abe, we found this leaf near a body.

银杏叶

美食家基地

Watch out Kush, he's using a bay leaf.

小心,库什,他在用月桂叶

和Anna学地道英语

You will take a leaf out of their book.

你会借鉴他们的经验。

中文百科

叶的特写
叶的结构
各种颜色的叶子

是高等植物的营养器官,侧边发育自植物的茎的叶原基。叶内含有叶绿体,是植物进行光合作用的主要场所。同时,植物的蒸散作用是通过叶的气孔实现的。

叶只出现在真正的茎上,即只有维管植物才有叶。蕨类、裸子植物和被子植物等所有高等植物都有叶。相对地,苔藓植物、藻类、真菌和地衣则没有叶。在这些扁平体(Thallus)中只能找到与叶相似的结构,但只能作为类似物(Analoga)。

但有人认为,上述的叶的外延,只是狭义的。广义的叶应该指所有能行光合作用的组织结构。但有一部分的茎为了不让水分被蒸散掉,而演变出如仙人掌般针状的叶子。

英语百科

Leaf 叶

Leaf of Tilia (Lime tree)
3D rendering of a computed tomography scan of a leaf
Near the ground these Eucalyptus saplings have juvenile dorsiventral foliage from the previous year, but this season their newly sprouting foliage is isobilateral, like the mature foliage on the adult trees above
A leaf shed in autumn.

A leaf is an organ of a vascular plant and is the principal lateral appendage of the stem. The leaves and stem together form the shoot. Foliage is a mass noun that refers to leaves collectively.

Typically a leaf is a thin, dorsiventrally flattened organ, borne above ground and specialized for photosynthesis. In most leaves, the primary photosynthetic tissue, the (palisade mesophyll), is located on the upper side of the blade or lamina of the leaf but in some species, including the mature foliage of Eucalyptus palisade mesophyll is present on both sides and the leaves are said to be isobilateral. Most leaves have distinctive upper (adaxial) and lower (abaxial) surfaces that differ in colour, hairiness, the number of stomata (pores that intake and output gases), epicuticular wax amount and structure and other features.

近义、反义、联想词
近义词
n.
plant organ, sheet, piece of paper, sheet of paper, section, segment

v.
peruse, turn, turn over, grow, develop, produce, get

联想词
foliage叶子;clover苜蓿;fern蕨类植物;fig无花果;petal花瓣;flower花;tree树;vine葡萄树;maple枫树;petals花瓣;willow柳木制品;
英英词典
leaf n.
  1. the main organ of photosynthesis and transpiration in higher plants

  2. synonymous: leafage, foliage
  3. a sheet of any written or printed material (especially in a manuscript or book)

  4. synonymous: folio
  5. hinged or detachable flat section (as of a table or door)
leaf v.
  1. look through a book or other written material
    • She leafed through the volume

    synonymous: flick, flip, thumb, riffle, riff
  2. turn over pages
    • leaf through a book
    • leaf a manuscript
  3. produce leaves, of plants
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更新时间:2025/6/19 17:33:30