[] a new or difficult task that tests sb/sth's ability and skill挑战◆Managers in the IT industry are facing some real challenges.信息技术产业的管理人员正面临着一些实实在在的挑战。◆How will the government meet the challenge of rising unemployment?政府如何应对失业率上升的挑战？◆Do you enjoy a challenge?你喜欢挑战吗？⨁a big / huge / major / real / tough challenge大的／巨大的／主要的／真正的／严峻的挑战⨁a competitive / management / technical challenge竞争上的／管理上的／技术上的挑战⨁to be / pose a challenge成为／构成挑战⨁to accept / face / take on / meet a challenge接受／面对／接受／迎接挑战an act of testing the authority or the strength of sb/sth质疑；质询；提出异议◆The group is facing a legal challenge from its shareholders.集团正面对来自股东的法律质询。⨁to face a challenge面对质疑⨁to launch / mount a challenge (to sb/sth)（对某人／某事物）开始进行／发起质询