breath test
noun [ C ] uk/ˈbreθ ˌtest/ us/ˈbreθ ˌtest/
（警方测定司机是否饮酒的）呼气酒精含量检测
a test in which the police ask a driver to blow into a breathalyser (= a device shaped like a bag) to show if they have drunk too much alcohol to be allowed to drive