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
You're making a mountain out of a molehill.
你在小题大做，把鼹鼠丘当成大山。
He has a pair of gloves.
他有一副手套。
The dish now had to be lifted vertically because one edge was resting against the side of the canal.
这次，盘子必须垂直吊出水面，因为盘子的一边紧靠着运河河岸。