Challenge-response
挑战-应答
🧩 词语组成解析
challenge
['tʃælɪndʒ]
n. 挑战;盘问;质疑;怀疑;
vt. 质疑;向…挑战;
vi. 提出挑战，要求竞赛（或竞争）;驳斥;
🗣️ 情景例句
I shouldn't have done that.
我不该那么做。
What number should I dial to get the operator?
我应该拨什么号码找到接线员？
Just let us know when you are ready.
那么，准备好了就请通知我们。