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TOEFL IELTS BNC: 3811 COCA: 3619

random

Word family
ran·dom /ˈrændəm/ ●●○ AWL adjectiveadj  
1 CHANCE/BY CHANCEhappening or chosen without any definite plan, aim, or pattern 随意的,任意的,随机的
 The company has introduced random drug testing of its employees.
公司已实行对雇员的随机毒品测试。
 A few random shots were fired.
胡乱放了几枪。
 We looked at a random sample of 120 families.
我们研究了随机抽样的120个家庭。
 a random selection of women who were in the shop
对店内女性的随机选择
2 at random CHANCE/BY CHANCEwithout any definite plan, aim, or pattern 任意地;随便地
choose/select/pick something at random
 The gang picked their victims at random.
这帮犯罪分子随意选择对象下手。
Examples from the Corpus
n3 informal strange, unusual, or unexpected
 She's great - she's just so random!
randomly adverbadv
 seven randomly chosen numbers
七个随机选择的数字
randomness noun [uncountableU]
nCOLLOCATIONS
nouns
a random sample
A test was carried out on a random sample of the cattle.
a random selection
He looked at a random selection of the files.
a random number
Pick a random number.
a random sequence
They were asked to memorize a random sequence of numbers.
random checks/tests
He believes the police should be able to carry out random breath tests.
random violence
The family were caught up in the random violence that haunts a neighbourhood ruled by gangs.
adverbs
completely/entirely random
The atomic particles seem to move in a completely random direction.
apparently/seemingly random
a wave of apparently random attacks
purely/truly random
a purely random sequence of numbers
phrases
in random order
The names are in random order.
Examples from the Corpus
From Longman Business Dictionary
randomran·dom /ˈrændəm/ adjectiveadj
1random sample/ check/test etc a sample, check etc in which things or people are chosen without any particular reason or pattern so that they will include a typical mixture of the larger group they represent
The group polled a random sample of US manufacturers.
Pennsylvania conducts random checks on trucks to see that they are properly maintained.
a rule requiring random drug testing of airline employees
compare quota sample under sample1
2random error/effect etc an error etc that happens without any pattern, so it is difficult to say when it will happen again or why it happens
Random errors in the survey will not matter greatly.
3at random without any particular reason or pattern
Pollsters interviewed 1000 adults picked at random in 50 states.
Origin random
(1300-1400) Old French randon great speed or force, from randir to run
ran·dom adjectiveadjn COLLOCATIONS1
LDOCE Online
Chinese
Syllable
Corpus
TOEFL IELTS BNC: 3811 COCA: 3619
random

adjective

VERBS | ADVERB VERBSbe, seem隨意;好像隨意ADVERBcompletely, entirely, purely, quite, totally完全隨機;純粹任意;十分隨意almost幾乎任意fairly, pretty, somewhat相當/頗為/有點兒隨意truly確實任意essentially基本隨機apparently, seemingly顯得隨意a seemingly random sequence of numbers似乎隨機選出的一串數字
TOEFL IELTS BNC: 3811 COCA: 3619
random

adjective

random ♦︎ haphazard ♦︎ indiscriminate ♦︎ disorganized ♦︎ untidy ♦︎ unsystematicThese words all describe things that are not organized or planned. 这些词均表示随意的、无计划的、无条理的。PATTERNS AND COLLOCATIONS 句型和搭配the random / indiscriminate use of stha random / haphazard approachrandom / indiscriminate attacksa haphazard / an indiscriminate methodin a random / haphazard fashion / mannerin a random / a haphazard / an unsystematic waytotally random / haphazard / disorganizedvery haphazard / disorganized / untidy / unsystematicrather haphazard / disorganized / untidyseemingly / apparently random / haphazard / indiscriminate random [usually before noun] done or chosen without sb deciding anything in advance; left to chance 随机的;随意的;碰运气的The group to be studied was selected on a random basis.用于研究的小组是随机选择的。There's no motive for this kind of random killing.这种随意杀戮没有动机。Random numbers are generated by the computer.随机号码是由电脑产生的。The names are listed in random order.名字按随机顺序排列。Random is often used in connection with statistics and research. Collocates include allocation, distribution, effects, fluctuations, numbers, and sample. * random常用于与统计和研究有关的方面。与之搭配的词有allocation、distribution、effect、fluctuation、number和sample。 OPP predetermined set at ˈrandom

idiom

She opened the book at random (= not at any particular page) and started reading.她随手翻开书的一页读了起来。
randomly

adverb

The winning numbers are randomly selected by computer.获奖号码是由电脑随机选取的。
haphazard hæpˈhæzəd; NAmE hæpˈhæzərd (disapproving) done with no particular order or plan; not organized well 无秩序的;无计划的;组织混乱的It was the result of rather haphazard planning.这是规划混乱不周的结果。In the early years training was haphazard.早年间培训缺乏计划。 haphazardly

adverb

She started packing, throwing things haphazardly into the case.她开始打包,将东西随便地丢进箱子里。
indiscriminate ˌɪndɪˈskrɪmɪnət (disapproving) (of actions) done without thought about the results, especially when it causes people to be harmed; (of people) acting without careful judgement (行为)不顾后果的,恣意的(尤指会伤及他人);(人)不慎思而行的indiscriminate violence / killing / slaughter任意施暴;滥杀;恣意屠杀The newspaper denounced the indiscriminate firing by the police.该报指责警方胡乱开枪。She's always been indiscriminate in her choice of friends.她一向择友不慎。 indiscriminately

adverb

The soldiers fired indiscriminately into the crowd.士兵向人群胡乱开枪。
disorganized (BrE also randomised) (disapproving) (of people) not able to plan or organize well; (of events) badly planned (人)缺乏条理的,不擅计划的;(活动)计划不周的They are lazy and disorganized.他们懒懒散散。It was a dismal, disorganized weekend.那个周末过得一塌糊涂。 OPP organized efficient untidy ʌnˈtaɪdi (of people) not keeping things neat or well organized (人)无条理的,不修边幅的Why do you have to be so untidy?你为什么非得这么邋遢? OPP tidy efficient untidiness

noun

[uncountable] Their arguments were usually about his untidiness.他们争吵通常都是因为他邋遢。
unsystematic ˌʌnˌsɪstəˈmætɪk without a clear system 无系统的;紊乱的;杂乱无章的Training for volunteers is patchy and unsystematic.对志愿者的培训零散无序。OPP systematic efficient
TOEFL IELTS BNC: 3811 COCA: 3619
random
Not planned: random, arbitrary, spontaneous...

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