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单词 rat
释义
rat
noun[C]
uk
/ræt/us
/ræt/

ratnoun[C](ANIMAL)

A2
asmallrodent,largerthan amouse, that has alongtailand isconsideredto beharmful:
鼠；老鼠；大家鼠
Ratscarrydisease.老鼠传播疾病。
Ithinkwe'vegotrats(= there are rats inourhouse).我觉得家里有老鼠。
picture of rat
GlobalP/iStock/Getty Images Plus/GettyImages
More examples
  • Bottles oflemonadedoctoredwith ratpoisonwerediscoveredin thekitchen.
  • Inbiologyclassesatschoolwe used todissectrats.
  • Theperiodofgestationof rats is 21days.
  • Thebarnwasinfestedwith rats.
  • We put down somepoisonedbaittokillthe rats.
SMART Vocabulary: related words and phrases
Rodents & similar animals
  • beaver
  • bunny
  • capybara
  • chinchilla
  • chipmunk
  • coney
  • cony
  • flying squirrel
  • gerbil
  • gopher
  • groundhog
  • guinea pig
  • lab rat
  • lemming
  • marmot
  • mice
  • prairie dog
  • squirrelly
  • vole
  • woodchuck
See more results »

ratnoun[C](PERSON)

informal
anunpleasantpersonwhodeceivesothersor is notloyal
卑鄙小人；骗子；背信弃义的人
SMART Vocabulary: related words and phrases
People who reveal secrets & tell tales
  • big mouth
  • blabbermouth
  • dobber
  • fink
  • grass
  • informer
  • nark
  • rumour-monger
  • scandalmonger
  • scaremonger
  • sneak
  • snitch
  • source
  • stool pigeon
  • supergrass
  • tattletale
  • telltale
  • whistle-blower

Idiom

like rats leaving a sinking ship
RAT
noun[C]
uk/ræt/us/ræt/
abbreviationforrapidantigentest: atestdone using asmallmedicaldevicethattestswhether or not there is aparticularsubstance,gene, etc. in asample(= asmallamountof asubstance):
A RAT is aquickhometesttocheckif you may have Covid-19.
It isimportanttostoreRATs at therighttemperature.
Synonym
LFT
More examples
  • Somepeopleget afalsenegativeresulton a RAT.
  • Some RATsrequireswabsboth from thenoseand themouth.
  • Eating orbrushingyourteethbefore taking a RATswabcanaffecttheresults.
SMART Vocabulary: related words and phrases
Medical treatment: symptoms & diagnosis of medical problems
  • aerophobia
  • aggressively
  • amyloid
  • antigen test
  • asymptomatic
  • contraindication
  • echocardiogram
  • lacunar
  • laparoscopic
  • laparoscopy
  • lateral flow test
  • PCR test
  • phlebotomy
  • present
  • prognosis
  • prognostic
  • prognosticate
  • questioning
  • staging
  • withdrawal symptoms
See more results »
(Definition ofratfrom theCambridge Advanced Learner's Dictionary & Thesaurus© Cambridge University Press)
rat
noun[C]
uk
/ræt/us
/ræt/

ratnoun[C](ANIMAL)

A2
asmallrodent,largerthan amouse, that has alongtailand isconsideredto beharmful
鼠；老鼠；大家鼠
Ratscarrydisease.老鼠传播疾病。
Ithinkwe'vegotrats(= there are rats inourhouse).我觉得家里有老鼠。
More examples
  • Bottles oflemonadedoctoredwith ratpoisonwerediscoveredin thekitchen.
  • Inbiologyclassesatschoolwe used todissectrats.
  • Theperiodofgestationof rats is 21days.
  • Thebarnwasinfestedwith rats.
  • We put down somepoisonedbaittokillthe rats.

ratnoun[C](PERSON)

informal
anunpleasantpersonwhodeceivesothersor is notloyal
卑鄙小人；骗子；背信弃义的人

rat| American Dictionary

rat
noun[C]
us
/ræt/

ratnoun[C](ANIMAL)

asmallanimalthatlookslike alargemouse:
A rat wassniffingaround thetrash.

ratnoun[C](PERSON)

infml
anunpleasantpersonwhodeceivesor is notloyal
(Definition ofratfrom theCambridge Academic Content Dictionary© Cambridge University Press)
#https://dictionary.cambridge.org//dictionary/english/rat##
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更新时间：2024/12/28 0:43:28