Key witness
[法] 主要证人, 关键证人
🧩 词语组成解析
key
[kiː]
n. 钥匙;（打字机等的）键;关键，线索，秘诀;（音乐的）调;
vt. 键入;锁上;调节…的音调;提供线索;
vi. 使用钥匙;
adj. 关键的;主要的;
witness
['wɪtnəs]
n. 目击者，见证人;[法]证人;证据;
vt. 出席或知道;作记录;提供或作为…的证据;
vi. 做证人;见证;
🗣️ 情景例句
I've been through every section with you, Richard.
我和你一起检视过每个部分， Richard。
When ale (or drink or wine) is in wit is out.
贪杯丧智。
It sped downhill at the end of the race and its driver had a lot of trouble trying to stop it.
它在接近终点时，冲下了山坡，驾驶员费了好大劲才把车停下来。