challenging

挑战的；引起挑战性兴趣的英释中释adjdifficult in an interesting or enjoyable way

要求；质疑；反对；向…挑战；盘问（challenge的ing形式）中释v

1 meet the challenge,迎接挑战；满足要求

2 rise to the challenge,接受挑战，奋起应付挑战

3 take up the challenge,应战

4 challenge cup,挑战杯；优胜杯；奖杯

1 Teaching young children is a challenging and rewarding job..幼儿教育是一项具有挑战性和有意义的工作。

2 a challenging problem.具有挑战性的难题