adjective🔗Share缺乏, 不足. Lacking something essential; often construed with in."The student's knowledge of grammar was deficient, making it hard for her to complete the writing assignments. "这个学生语法知识不足，导致她很难完成写作作业。conditionqualityChat with AIVocabulary GamePractice Reading
adjective🔗Share不足，缺乏 Insufficient or inadequate in amount."The student's knowledge of fractions was deficient, causing problems with the math assignments. "这个学生的分数知识不足，导致数学作业出现了很多问题。amountqualityconditionChat with AIVocabulary GamePractice Reading
adjective🔗Share亏的, 不足的 Of a number n, Having the sum of divisors σ(n)<2n, or, equivalently, the sum of proper divisors (or aliquot sum) s(n)"The number 10 is considered deficient because the sum of its proper divisors (1, 2, and 5) is 8, which is less than 10. "数字10被认为是“亏的”，因为它所有真因数（1、2和5）之和为8，小于10。mathnumberChat with AIVocabulary GamePractice Reading
