/ˈmi:zlz ||; ˈmizḷz/noun [U] a common infectious disease, especially among children, in which your body feels hot and your skin is covered in small red spots 痲疹 Measles looks like a plural noun but it is used with a singular verb In many countries measles is a very dangerous disease. measles看似复数名词，但要与单数动词连用：In many countries measles is a very dangerous disease.在不少国家里，痲疹是一种很危险的疾病。