In an abundant number, the sum of the factors is greater than the number, and in a deficient number, the sum of the factors is less than the number.

盈数的因子的总和大于数字本身，而亏数的因子的总和小于数字本身。

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However, the deficient number of cases impacts the credibility of the articles.

但由于病例数少，影响实验的可信度。

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Look at line number four, which is so clearly -- simply by looking at this, you can tell it's deficient in the number of syllables.

看第四行，显而易见--单单看一眼,就能看出它的音节数不够。

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"The engineering design of the building was deficient in a number of respects, " it found.

BBC: NZ quake collapse building design 'deficient'

Arizona and Rhode Island have a similar number of structurally deficient or functionally obsolete bridges -- 384 and 405 respectively.

CNN: The story

There are a number of services which sell fake Twitter followers for the socially deficient.

FORBES: Which Startup Bloggers Have The Most Legitimate Twitter Followers?