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
Staff only.
员工专用。
That's very nice of you. I guess I could use some help.
谢谢你的好意。我想我可能要一点帮助。
When it is eating normally, its own training begins.
当它进食正常了，训练就开始。