leaf

noun

/liːf/

(plural leaves

/liːvz/

)

Idioms

enlarge image
enlarge image

[countable] a flat green part of a plant, growing from a stem or branch or from the root叶；叶片；叶子
- lettuce/cabbage/oak leaves莴苣叶；卷心菜叶；橡树叶
- the dead leaves of autumn/the fall秋天的枯叶
- The leaves on the trees were beginning to turn from green to orange.树上的叶子开始从绿色变成橙色。
- in leaf Few trees are in leaf yet.还没有几棵树长出叶子。
- The trees are just coming into leaf.树木正好在长叶子。
Collocations The living world
The living world生物界Animals动物
- animals mate/breed/reproduce/feed (on something)动物交配／繁育／繁殖／以…为食
- fish/amphibians swim/spawn (= lay eggs)鱼／两栖动物游动／产卵
- birds fly/migrate/nest/sing鸟飞翔／迁徙／筑巢／啼叫
- insects crawl/fly/bite/sting昆虫爬／飞／咬／叮
- insects/bees/locusts swarm昆虫／蜜蜂／蝗虫成群地飞来飞去
- bees collect/gather nectar/pollen蜜蜂采蜜／花粉
- spiders spin/weave a web蜘蛛结网／织网
- snakes/lizards shed their skins蛇／蜥蜴蜕皮
- bears/hedgehogs/frogs hibernate熊／刺猬／青蛙冬眠
- insect larvae grow/develop/pupate昆虫的幼虫生长／发育／化蛹
- an egg/a chick/a larva hatches卵孵化；小鸡出壳；幼虫孵出
- attract/find/choose a mate吸引／找到／选择配偶
- produce/release eggs/sperm产卵；排卵；产生／释放精子
- lay/fertilize/incubate/hatch eggs产卵；使卵受精；孵卵
- inhabit a forest/a reef/the coast栖居于森林／礁石／海岸
- mark/enter/defend (a) territory标出／进入／保卫领地
- stalk/hunt/capture/catch/kill prey悄悄接近／猎杀／捕获／杀死猎物
Plants and fungi植物和真菌
- trees/plants grow/bloom/blossom/flower树木／植物生长／开花
- a seed germinates/sprouts种子发芽
- leaves/buds/roots/shoots appear/develop/form叶子／花蕾／根茎／幼苗长出来／长大／成形
- flower buds swell/open花蕾含苞欲放／绽放
- a fungus grows/spreads/colonizes something菌类生长／扩散／长满…
- pollinate/fertilize a flower/plant给花／植物授粉
- produce/release/spread/disperse pollen/seeds/spores长出／传播花粉／种子／孢子
- produce/bear fruit结果
- develop/grow/form roots/shoots/leaves长出根茎／嫩芽／叶子
- provide/supply/absorb/extract/release nutrients提供／吸收／提取／释放营养物
- perform/increase/reduce photosynthesis进行／增加／减少光合作用
Bacteria and viruses细菌和病毒
- bacteria/microbes/viruses grow/spread/multiply细菌／微生物／病毒生长／扩散／繁殖
- bacteria/microbes live/thrive in/on something细菌／微生物在…中存活／大量生长
- bacteria/microbes/viruses evolve/colonize something/cause disease细菌／微生物／病毒进化／长满…／引发疾病
- bacteria break something down/convert something (into something)细菌（将某物）分解／转化（成某物）
- a virus enters/invades something/the body病毒进入／侵入某物／身体
- a virus mutates/evolves/replicates (itself)病毒变异／演化／（自我）复制
- be infected with/contaminated with/exposed to a new strain of a virus/drug-resistant bacteria感染上／接触到一种新病毒／抗药性细菌
- contain/carry/harbour bacteria/a virus带有细菌／病毒
- kill/destroy/eliminate harmful/deadly bacteria杀灭有害的／致命的细菌
see also bay leaf, curry leaf, fig leaf, maple leaf, tea leaf
- Deciduous trees shed their leaves in autumn.落叶树木在秋天落叶。
- The leaves of this plant are from 1 to 1½ inches in length.这种植物的叶子长1到1英寸。
- He picked a leaf from the basil plant and started to chew it.他摘下一片罗勒叶子嚼了起来。
- In the spring the plant began to put out new leaves.春天这株植物开始长出新叶。
- It was spring and the trees were coming into leaf.春天来了，树木发芽了。
- Spring arrived and the first green leaves began to appear.春天到了，第一批绿叶开始长出来了。
- Stop trying to read tea leaves.别再试图预测未来了。
- The boys helped by raking the leaves in the yard.男孩们帮忙把院里的树叶耙拢起来。
- The corn was already ripening and the trees in full leaf.玉米已经成熟，树木也已枝繁叶茂。
- The ground was thick with dead leaves.地上积了厚厚的枯叶。
- The leaves rustled in the light breeze.树叶在微风中沙沙作响。
- The summer was over and the leaves were beginning to turn.夏季过去了，叶子开始变黄。
- This plant has beautifully variegated leaves.这种植物的叶子色彩斑斓，非常漂亮。
- Throw the tea leaves on the flower bed.把茶叶撒在花坛上。
- broad leaf plants阔叶植物
- dry leaves blowing in the wind在风中舞动的枯叶
- the leaf litter on the forest floor森林的落叶层
Topics Plants and treesb1
Collocations Dictionary
adjective
- new
- young
- autumn
- …
verb + leaf
- have
- come into
- grow
- …
leaf + verb
- appear
- emerge
- grow
- …
leaf + noun
- litter
- mould/mold
phrases
- in full leaf
-leaf, -leafed, -leaved
(in adjectives构成形容词) having leaves of the type or number mentioned有…状叶的；有…片叶的
- a four-leaf clover四叶车轴草
- a broad-leaved plant阔叶植物
[countable] a sheet of paper, especially a page in a book（纸）页，张；（尤指书的）页
- She carefully turned the leaves of the precious volume.她小心翼翼地翻动珍贵的书页。
see also flyleaf, loose-leaf, overleafTopics Literature and writingc1
[uncountable] metal, especially gold or silver, in the form of very thin sheets薄金属片；（尤指金或银）箔
- gold leaf金箔
[countable] a part of a table that can be lifted up, or an extra section that can be added into the table, in order to make the table bigger活动桌板；折叠桌板

词源Old English lēaf, of Germanic origin; related to Dutch loof and German Laub.

Idioms

take a leaf from/out of somebody’s book

to copy somebody’s behaviour and do things in the same way that they do, because they are successful效仿，模仿（成功之人的举止和行为）

turn over a new leaf

to change your way of life to become a better, more responsible person改恶从善；重新做人