Falling factorial
[计] 递降阶乘
🧩 词语组成解析
a. 落下的, 坠落的, 下降的\\n[化] 消胀
factorial
['fæktɔ:riəl]
adj. 因子的，阶乘的;
n. 阶乘积，阶乘;
🗣️ 情景例句
We had such a good time at the aquarium.
我们在水族馆玩得真开心。
Sorry, sir. But it's our graduation day.
对不起，不过，今天是毕业的日子嘛。
It's to the north of England; it's part of Britain.
它位于苏格兰的北部，是不列颠的一部分。