Candidate key
[计] 候选关键字
🧩 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;
🗣️ 情景例句
Wonderful. Please.
好啊！请。
While we were having breakfast,John was talking on the telephone.
当我们正在吃早餐时，约翰正在打电话。
we are no longer free to choose the things we want,
但我们已经无法独立自主地选购自己所需的东西了。