common denominator

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When working with rational numbers, it helps to perform a bit of numerical legerdemain: namely that of finding a common denominator to make certain operations easier.
在処理有理數時，採取一點數值技巧將會有所幫助：也就是說，找到公分母，使某些操作變得更容易。
As a negotiating stance, the regions and countries with more stringent policies will insist that national and global arrangements must not pander to the lowest common denominator.
實行相對較嚴政策的地區和國家的談判政策將是堅持國家和全球的碳排放配額分配不應服從於最小公分母。
You also get a glance into producing CSV files—not just because they are a sort of "lowest common denominator" interchange format, but because you can convert them automatically into ODS files.
您還有機會了解到 CSV 文件的創建過程 — 不衹因爲它們是一種 “最小公分母” 交換格式，還因爲您可以將它們自動轉換爲 ODS 文件。

"But bluegrass is a common denominator that brings a lot of people together."
But to find a common denominator where we can all talk, where we don't find ourselves divided by religion or culture anymore, because we've got down something so essential.
我們所找的共通之処可以使我們彼此交流，讓我們發現我們,不再被宗教與文化分隔開來，因爲我們已經獲得了最本質的東西。
普林斯頓公開課 - 人性課程節選
I appreciate particularly the idea of human rights, because it is meant to get a round culture, and particularly a round religion, to find those common denominators, hopefully not the lowest denominator that's just ethical washout. It doesn't mean anything.
我尤其贊賞人權的觀點，因爲它是要搆建一個全麪的文化，尤其是一個全麪完整的宗教，以此來尋求人類共通的地方，希望別是最低層次的共通點,否則衹會是道德的失敗，沒有任何意義。
普林斯頓公開課 - 人性課程節選

No matter how many new digital tools come out, the common denominator is still people.
FORBES: Digital Classrooms: Is The Investment Paying Off?

(NUMBER) a number that can be divided exactly by all the denominators (= numbers under the line) in a group of fractions
(SIMILARITY) something that is the same for all the members of a group and might bring them together

In mathematics, a common denominator is a number which can be divided exactly by all the denominators in a group of fractions.
A common denominator is a characteristic or attitude that is shared by all members of a group of people.
&rarrsee also lowest common denominator