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
Lacks enthusiasm, passive and indifferent.
卸乏热情，不主动且态度冷淡。
Let's find out.
我们去问一下吧。
When they objected, they were killed.
他们反抗时就被杀害。