dark chocolate
noun [ C or U ] uk/ˌdɑːk ˈtʃɒk.lət/ us/ˌdɑːrk ˈtʃɑːk.lət/ (US also bittersweet chocolate, semisweet chocolate); (UK also plain chocolate)
（未加牛奶的）纯巧克力，黑巧克力
dark brown chocolate that has been made without milk or with very little milk