Foreign key
[计] 外来关键字
🧩 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
from his new book entitled Family Album, U.S.A.
从他的新书Family Album, U.S.A.
I know the boy whose father is a medical doctor.
我知道那个男孩的父亲是医师。
The other students in the class keep their eyes closed.
班里其余学生一直闭着眼。