to challenge

• 问口令

to challenge的用法和样例：

例句

1. New competitors are emerging to challenge the old economic arrangements.
   新的竞争对手正在崛起，向旧的经济布局挑战。
2. I am confident they will move the American economy ahead, move it firmly and soundly so that there will never be a time when the Soviet Union will be able to challenge our superiority in this field.
   我确信这些建议能把美国经济推向前进，使之稳步而合理地发展、让苏联在经济上没有挑战我们超级大国地位的机会。
3. In deference to our host I decided not to challenge his controversial remarks.
   我出於对主人的尊敬，不对他那易引起争论的话表示异议。