ob·li·ga·tion/ˏɑblə`geʃən; ˌɒblɪˈɡeɪʃən/ n [C,U] a moral or legal duty to do something 〔道德或法律上的〕义务; 责任: an obligation to do sth Employers have an obligation to provide a safe working environment. 雇主有责任为员工提供一个安全的工作环境。 be under an obligation to do sth People entering the shop are under no obligation to buy. 进入店铺的人不一定要买东西。