least common denominator

noun
🔊/ˌliːst ˌkɒmən dɪˈnɒmɪneɪtə(r)/
🔊/ˌliːst ˌkɑːmən dɪˈnɑːmɪneɪtər/
(North American English)
(also lowest common denominator British and North American English)
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  1. (mathematics数学) the smallest number that the bottom numbers of a group of fractions can be divided into exactly 最小公分母
  2. (disapproving) something that is simple enough to seem interesting to, or to be understood by, the highest number of people in a particular group; the sort of people who are least intelligent or accept something that is of low quality 大众化的东西;最平庸的人