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
How's that?
这是怎么一回事？
Competition for this kind of goods is tough.
这种商品的竞争非常激烈。
Maybe we could go shopping this evening.
或许我们可以今晚去买东西。