An interesting property of a factorial is that the factorial of a number is equal to the starting number multiplied by the factorial of the number immediately below it.

阶乘的一个有趣特性是，某个数的阶乘等于起始数(starting number)乘以比它小一的数的阶乘。

youdao

Starting around 2012, requests for the visas rose sharply; from 2011 to 2016 the number of visas issued more than doubled.

从2012年左右开始，签证申请数急剧上升；2011年到2016年，发放的签证数量增加了一倍多。

youdao

There is considerable evidence that the number of new companies starting up this year will be no higher than it was last year.

有相当多的证据表明，今年新成立的公司数量不会比去年多。

youdao

In a similar period starting 18 months after the ban, the number was 237.

VOA: special.2009.01.07

We talked about two weeks ago, that if you had a population of cells, you could grow those population of cells and you could make, if they adapted the culture properly, you could make an infinite number of cells from one starting solution.

两周前我们讲到,如果你有一群细胞,你可以使细胞数量增长,如果培养得当,你可以,从开始的营养液中制造出无限数量的细胞

耶鲁公开课 - 生物医学工程探索课程节选

The point here is when you're playing a game, you want to think about what other people are trying to do, to try and predict what they're trying to do, and it's not necessarily a great starting point to assume that the people around you are random number generators.

这里的要点是当你在进行游戏时,你想要推测出其他人的想法,想要推测出他们可能的选择,假设别人是随机数生成器可不是,一个很好的出发点

耶鲁公开课 - 博弈论课程节选

Mamadou Bagayoko, the starting number nine, was to score only once.

BBC: Mali's problem solved

Montpellier's Trinh-Duc, whose grandfather was Vietnamese, is regarded as a running rather than kicking fly-half and won his first cap as a starting number 10 in the opening Six Nations game against Scotland.

BBC: France forced into change at lock

Add Martyn Williams, Jonathan Thomas and Andy Powell - who all finished the match against the All Blacks - and the starting number eight on Saturday, Ryan Jones, and Wales coach Warren Gatland has that magic thing: options and strength in depth.

BBC: Winless Wales still pack punch