A rat found throughout the world, typically living in association with man and regarded as a pest. It is commonly kept as a laboratory animal and as a pet, and is also bred in the albino form.
褐家鼠。亦称COMMON RAT , NORWAYRAT
Rattus norvegicus, family Muridae
Also called common rat, Norway rat
Example sentencesExamples
Rats and mice also shared the peoples houses; the mice were the same as the modern house mouse, but the rats were the slightly smaller black rats, not the brown rats of modern cities.
Many people mistake the endangered water vole for the brown rat and accidentally poison them or disturb their burrows.
For instance, black and brown rats were brought to America, and gray squirrels and muskrats to Eurasia.
Only three out of twenty-seven species of mammals in Kuwait are not endangered, and they are the house rat, brown rat, and house mouse.
Originating in Asia and arriving in North America about 1775, the brown rat is humanity's worst animal pest.
Definition of brown rat in US English:
brown rat
nounbraʊn ræt
A rat found throughout the world, typically living in association with man and regarded as a pest. It is commonly kept as a laboratory animal and as a pet, and is also bred in the albino form.
褐家鼠。亦称COMMON RAT , NORWAYRAT
Rattus norvegicus, family Muridae
Also called common rat, Norway rat
Example sentencesExamples
For instance, black and brown rats were brought to America, and gray squirrels and muskrats to Eurasia.
Rats and mice also shared the peoples houses; the mice were the same as the modern house mouse, but the rats were the slightly smaller black rats, not the brown rats of modern cities.
Many people mistake the endangered water vole for the brown rat and accidentally poison them or disturb their burrows.
Only three out of twenty-seven species of mammals in Kuwait are not endangered, and they are the house rat, brown rat, and house mouse.
Originating in Asia and arriving in North America about 1775, the brown rat is humanity's worst animal pest.