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n. 挑战, 盘问
vt. 向...挑战, 要求, 怀疑
vi. 挑战, 对(证据等)表示异议
【经】 挑战, 申请回避

a challenge to a duel.
挑战要求决斗
a challenge to the government\'s authority.
公然对抗政府权威
a challenge to a theory.
对一项理论质疑
a career that offers a challenge.
大有作为的事业
challenged me to a game of chess.
以下棋向我挑战
a book that challenges established beliefs.
对确定的信念表示异议的书籍
events that challenge our attention.
引起我们注意的事件
a problem that challenges the imagination.
运用想象力的问题

environmental challenge challenge switch beyond challenge challenge cup challenge for the ball foreign capital challenge rise to the challenge verification by challenge take a challenge lying down challenge witness fluid challenge Challenge Testing challenge feeding peremptory challenge challenge feeder challenge assay challenge dose challenge suggestion