underground

Word family  noun ground underground grounding grounds adjective goundless underground ≠ overground grounded verb ground adverb underground

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++un·der·ground1 /ˈʌndəɡraʊnd $ -ər-/ ●●○ adjective  1  UNDER/BELOWbelow the surface of the earth 地(面)下的 an underground passage 地下通道 The car park is underground. 停车场在地下。2  [only before noun]SECRET an underground group, organization etc is secret and illegal 〔团体、组织等〕地下的，秘密的，不合法的 an underground terrorist organization 地下恐怖主义组织► see thesaurus at secret3  [only before noun] underground literature, newspapers etc are read by a small number of people, and would seem slightly strange or shocking to most people 〔文学作品、报纸等〕小众的，非主流的 the underground press 小众报刊

Examples from the Corpus

underground• The office's parking garage is underground.• Also, underground conditions were significantly different from what was anticipated.• But instead he returned to Hue as an organizer for an underground movement.• an underground newspaper• underground nuclear testing• Slowly an underground resistance movement grew, catering for discriminating customers.• If it is chosen, the underground site could start receiving canisters of waste in 2010, Olds said.• A private consortium has financial backing for a scheme to build an entire underground toll-road system.• The gas, which seeps out of the earth from underground uranium deposits, can collect in dangerous concentrations in some houses.• Amplification of this energy promotes fertilization of the surrounding area via underground water-courses.un·der·ground2 /ˌʌndəˈɡraʊnd $ -ər-/ adverb  1  UNDER/BELOWunder the earth’s surface 在地(面)下 This animal spends most of its life underground. 这种动物一生中的大部分时间都待在地下。 nuclear waste buried deep underground 深埋在地下的核废物2  go underground SECRETto start doing something secretly, or hide in a secret place 转入地下；隐匿 The ANC was forced to go underground when its leaders were arrested. 领导人被捕之后，非洲国民大会被迫转入地下。

Examples from the Corpus

underground• Of this amount, about 30 percent can be mined at the surface; the balance is underground.• The industry is now investigating sites in which to dump nuclear waste underground.• Three of the stations are underground, and the last two at surface level.• Over the next few days, though, the signs of what was happening underground became more severe.• There is now a through route underground between Gaping Gill and Ingleborough Cave but only for brave men.• The insect spends most of its life underground, eating roots and stems.• Dining: Restaurants are open in the visitor center and underground, near the Big Room.• When he was making an underground survey of the New Almaden mine he stayed underground for twenty hours at a stretch.deep underground• After 50 years the waste will probably be buried deep underground.• Darkness seemed to engulf them as they disappeared, swallowed up in a kind of tunnel way, running deep underground.• Nervous trembles ached in her legs and the floor was vibrating fractionally with the movement of some train deep underground.• Rivers have been restored to healthy levels and, more importantly, this rain is at last reaching the water-permeable rocks deep underground.• Until now it was assumed that sites deep underground provided a stable environment for buried waste.• A notice informed the public that this was the deepest Underground station in London, three hundred stairs to the bottom.un·der·ground3 /ˈʌndəɡraʊnd $ -ər-/ noun  the Underground a) British EnglishTTT a railway system under the ground 地下铁路，地铁 SYN American English subway b) PPSECRETan illegal group working in secret against the rulers of a country 〔反政府的〕地下组织，秘密团体 →4  See picture on 见图 Page A13 Town 城镇

Examples from the Corpus

underground• A desire to remind Rome of its arrogance remained latent in the Celtic underground.• His father, Wei Zilin, worked in the Communist underground in the 1930s.• No way do the charts tell the whole story - the new underground is of much more interest and relevance.• I found that I was a natural boss of a prison underground.• But the scale of recruitment to the revolutionary underground suggests that it can not be explained in terms of individual maladjustment.• But out of necessity, the underground continued to flourish.

un·der·ground1 adjectiveun·der·ground2 adverbun·der·ground3 nounChineseSyllable  

below the surface the earth Corpus of

underground

I

un‧der‧ground¹ /ˈʌndəɡraʊnd $ -ər-/ adjective1. below the surface of the earth:
    an underground passage
    The car park is underground.
2. [only before noun] an underground group, organization etc is secret and illegal:
    an underground terrorist organization
3. [only before noun] underground literature, newspapers etc are read by a small number of people, and would seem slightly strange or shocking to most people:
    the underground press
     

THESAURUS

   ▪ secret known about by only a few people, who have agreed not to tell anyone else: a secret meeting place | The details of the proposal must remain secret.
   ▪ confidential used about information, especially in business or government, that is secret and not intended to be shown or told to other people: a highly confidential report | Employees’ personal details are treated as strictly confidential.
   ▪ classified used about information that the government has ordered to be kept secret from most people: He was accused of passing on classified information to the Russians in the 1950s.
   ▪ sensitive used about information that is kept secret because there would be problems if the wrong people knew it: A teenager managed to hack into sensitive US Air Force files.
   ▪ covert [only before noun] used about things that are done secretly, especially by a government or official organization: a CIA covert operation
   ▪ undercover [usually before noun] used about things that are done secretly by the police in order to catch criminals or find out information: Detectives arrested the suspect after a five-day undercover operation.
   ▪ underground an underground organization or newspaper is one that operates or is produced secretly and opposes the government: Her father was a member of the underground resistance movement in France during World War II.
   ▪ clandestine /klænˈdestən, klænˈdestɪn/ secret and often illegal or immoral: clandestine meetings | his involvement in a clandestine operation to sell arms to Iran | a clandestine love affair
   ▪ hush-hush informal used about information or activities that are kept officially secret: He was put in charge of some hush-hush military project. | I’ve no idea what he does – it’s all very hush-hush.

II

un‧der‧ground² /ˌʌndəˈɡraʊnd $ -ər-/ adverb1. under the earth’s surface:
    This animal spends most of its life underground.
    nuclear waste buried deep underground
2. go underground to start doing something secretly, or hide in a secret place:
    The ANC was forced to go underground when its leaders were arrested.

III

un‧der‧ground³ /ˈʌndəɡraʊnd $ -ər-/ nounthe Underground
  a. British English a railway system under the ground
   SYN  subway American English
  b. an illegal group working in secret against the rulers of a country