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
and it's only about an hour's drive from here.
而且从此地到那里只有大约一小时的车程。
Every man has a fool in his sleeve.
聪明一世，糊涂一时。
115 Park Road
公园路115号