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.
在处理有理数时，采取一点数值技巧将会有所帮助：也就是说，找到公分母，使某些操作变得更容易。
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.
实行相对较严政策的地区和国家的谈判政策将是坚持国家和全球的碳排放配额分配不应服从于最小公分母。
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.
您还有机会了解到 CSV 文件的创建过程 — 不只因为它们是一种 “最小公分母” 交换格式，还因为您可以将它们自动转换为 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.
我们所找的共通之处可以使我们彼此交流，让我们发现我们,不再被宗教与文化分隔开来，因为我们已经获得了最本质的东西。
普林斯顿公开课 - 人性课程节选
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.
我尤其赞赏人权的观点，因为它是要构建一个全面的文化，尤其是一个全面完整的宗教，以此来寻求人类共通的地方，希望别是最低层次的共通点,否则只会是道德的失败，没有任何意义。
普林斯顿公开课 - 人性课程节选

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