Key of reference
[计] 引用关键字
🧩 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;
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
It's been a pleasure to talk to you.
和你谈话是件很愉快的事。
Why so pissed off? Someone got in your way?
干嘛发火，谁惹你啦?
And it should not be forgotten how small those resources are in a poor and backward country.
不应忘记，在一个贫穷落后的国家里，那部分财力是很有限的。