cover noun (2) () the area where a particular service is provided（提供某种服务的）范围◆Mobile-phone coverage is limited to the big cities.移动电话的服务范围限于大城市。◆The deal gives the airline coverage across the whole country.这笔交易可让航空公司在全国提供服务。 () the percentage of a possible audience for an advertisement, etc. who see it at least once广告覆盖面 ()