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BNC: 1992 COCA: 1734
rootnoun [ C ]uk/ruːt/ us/ruːt/

root noun [ C ] PLANT PART

B2 the part of a plant that grows down into the earth to get water and food and holds the plant firm in the ground根，根茎，根块

Examples

We moored the boat to a large tree root.

He took hold of the plant's root and pulled.

The tree's roots go down three metres.

Grow the bulbs in a transparent plastic box, so the children can see the roots growing.

We were discussing the roots of the current economic malaise.

root noun [ C ] CAUSE/ORIGIN

C1 the cause or origin of something bad（坏事的）根源，根由，原因

We must get to the root of (= discover the cause of) this problem.我们一定要探本溯源，查出造成这个问题的原因。
What is/lies at the root of the problem is their lack of interest.这一问题的根本原因是他们缺乏兴趣。
The high crime rate has its roots in unemployment and poverty.高犯罪率的根源在于失业和贫穷。
So what's the root cause of his anxiety?那么使他焦虑的根本原因是什么呢？
roots [ plural ]

B2 origins根，根源，起源

The city of Tours can trace its roots back to Roman times.图尔城的历史可以追溯到古罗马时代。
See also
grassroots adjective

root noun [ C ] OF TOOTH/HAIR/NAIL

the part of a hair, tooth, or nail that is under the skin（毛发、牙或指甲的）根部

root noun [ C ] OF WORD

specialized language The root of a word is its most basic form, to which other parts, such as affixes, can be added.词根

The root of the word "sitting" is "sit".sitting 这个词的词根是 sit。

root noun [ C ] IN MATHEMATICS

specialized mathematics a solution of some equations (= mathematical statements)（数学方程式的）根

specialized A root of a particular number is another number that, when multiplied by itself one or more times, reaches that number.根；方根

The square root of 64 is 8, and the cube root of 64 is 4.64的平方根是8，立方根是4。

Idiom(s)

put down roots
root and branch
take root
rootverbuk/ruːt/ us/ruːt/

root verb LOOK

[ I usually + adv/prep ] to look for something by turning things over翻找，翻寻

She rooted through/among the papers on her desk.她在桌上的文件中翻来翻去地找东西。
The pigs rooted for acorns in the forest.猪在树林里翻拱找橡子吃。

root verb PLANT

[ I ] to grow roots生根；长出根来

The trees failed to root and so died.这些树没能生根，所以都死了。

Phrasal verb(s)

root around (somewhere)
root for sb
root sth/sb out
root sth out/up
BNC: 1992 COCA: 1734
root

noun¹

 1of a plant植物ADJECTIVE | VERB + ROOT | ROOT + VERB | ROOT + NOUN | PREPOSITION ADJECTIVE➤deep, shallow深的根；淺的根▸➤gnarled多節瘤的根▸➤plant, tree植物的根；樹根VERB + ROOT➤develop, grow發育／長出根部▸➤put down, take生根；長出根來◇I hope those cuttings will take root.我希望那些插枝能生根。➤plant插根ROOT + VERB➤grow根部生長ROOT + NOUN➤system根系▸➤ball根團▸➤crops, vegetables根用作物；塊根蔬菜▸➤growth根系生長PREPOSITION➤by its/the roots連根◇She pulled the shrub out by its roots.她把灌木連根拔起。
root

noun²

 2roots place where you feel you belong歸屬地ADJECTIVE | VERB + ROOTS ADJECTIVE➤humble卑微的出身◇Despite his wealth, he never forgot his humble roots.儘管很有錢，他卻從沒忘記自己卑微的出身。➤strong強有力的根基▸➤cultural文化根基◇severed from our cultural roots by industrialization工業化把我們與文化根基斷開➤working-class工薪階層出身▸➤African, French, Scottish, etc.祖籍非洲／法國／蘇格蘭等VERB + ROOTS➤get back to, go back to, return to找到根；返回祖籍地◇My husband wants to go back to his Irish roots.我丈夫想返回原籍愛爾蘭。➤trace追溯祖籍◇They can trace their roots back to the 16th century.他們的祖籍可以追溯到 16 世紀。➤put down扎根◇We haven't been here long enough to put down roots.我們在這兒還沒多久，還未落地生根。➤be cut off from, forget與出身脫離；忘記出身
root

noun³

 3cause/source原因；來源ADJECTIVE | VERB + ROOT | ROOT + VERB | ROOT + NOUN | PREPOSITION | PHRASES ADJECTIVE➤deep, strong很深的根源▸➤very真正的根源▸➤common, same共同的／同一個根源◇The two languages share a common root.這兩種語言同源。➤historical歷史根源VERB + ROOT➤have有根源▸➤explore, find, get at, get to, go to探索根源；找到根源；探本溯源◇I've spent months trying to get to the root of the problem.我已經花了好幾個月的時間尋找問題的根源。ROOT + VERB➤be planted in sth根植於⋯中◇Jazz's roots are firmly planted in African tradition.爵士樂深深根植於非洲傳統。➤lie at原因在於▸➤go back起源回溯到⋯◇The company's roots go back to the 18th century.公司的起源可以回溯到 18 世紀。ROOT + NOUN➤cause根本原因PREPOSITION➤at (the root of)從根本上◇It is a moral question at root.從根本上說這是個道德問題。◇His fears of loneliness lay at the very root of his inability to leave.他無法離開的根本原因就在於他害怕寂寞。➤root in根源在⋯中◇The unrest has roots in religious differences.動盪的根源是宗教分歧。PHRASES➤the root of all evil萬惡之源◇They consider globalization to be the root of all evil.他們認為全球化是萬惡之源。➤the root of the matter, the root of the problem事情／問題的根源◇I expect money is at the root of the matter.我認為錢的問題是此事的根源。
BNC: 1992 COCA: 1734
root noun
⇨ family 3 (my African roots) ⇨ source (the root of the problem)
BNC: 1992 COCA: 1734

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