hard core/ˌ· ˈ·/ n [singular 单数] BrE 【英】 1 the small group of people in an organization who are its most active and determined members 核心力量，中坚分子: the hard core of the Communist Party 共产党的中坚力量 2 a small group of people who refuse to change their behaviour or beliefs 顽固分子: the hard core of drunk drivers who carry on drinking and driving 坚持要喝酒开车的顽固不化的酒后驾车司机