vi‧rus W3 / vaɪərəs $ vaɪrəs / 名词

1 [可数和不可数名词] a very small living thing that causes infectious illnesses :

children infected with the Aids virus

a virus infection

2 [可数名词] a set of instructions secretly put onto a computer or computer program, which can destroy information. When a computer that has a virus makes a connection with another computer, for example by email , the virus can make copies of itself and move to the other computer.

3 [可数名词] a program that sends a large number of annoying messages to many people’s mobile phone s in an uncontrolled way

COLLOCATIONS

ADJECTIVES/NOUN + virus

the AIDS/flu/polio etc virus They are trying to stop the spread of the flu virus.

a deadly/killer virus a killer virus which has already been responsible for the deaths of hundreds of people

virulent (= causing many people to become ill ) Why was this particular strain of the virus so virulent?

动词

a virus causes something The virus causes people to sweat.

carry a virus (= have a virus, which you may then give to other people ) A nurse at the clinic was found to be carrying the virus.

get a virus ( also contract a virus formal ) He does not know when he contracted the virus.

be infected with a virus Thousands of people may already be infected with the virus.

be exposed to a virus Four workers at the facility, though exposed to the virus, never became ill.

transmit/pass on a virus (= pass it from one person or animal to another ) The rabies virus is transmitted in saliva when one animal bites another.

a virus spreads The virus spread throughout the population.

短语

a strain of a virus (= one type of it ) Doctors fear that a new strain of the virus will appear.

a virus infection The fever was caused by a virus infection.