- A deficiency is an insufficient amount of something. If you feel sluggish and tired all day, you might have an iron deficiency, meaning you aren't eating enough iron-rich foods.
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- n. 缺乏；缺陷，缺点
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1. Vitamin deficiency in the diet can cause illness.
饮食中缺乏维生素可能导致疾病。
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2. a deficiency of Vitamin B
缺乏维生素 B
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3. deficiencies in the computer system
计算机系统的种种缺陷
de·fi·ciency / dɪˈfɪʃnsi ; NAmE dɪˈfɪʃnsi / noun ( plural de·fi·ciencies ) ( formal) 1 [uncountable , countable ] deficiency(in/of sth) the state of not having, or not having enough of, sth that is essential 缺乏；缺少；不足 SYN shortage ◆ Vitamin deficiency in the diet can cause illness. 饮食中缺乏维生素可能导致疾病。 ◆ a deficiency of Vitamin B 缺乏维生素 B 2 [countable ] deficiency(in/of sth) a fault or a weakness in sth/sb that makes it or them less successful 缺点；缺陷 ◆ deficiencies in the computer system 计算机系统的种种缺陷 deficiency deficiencies de·fi·ciency / dɪˈfɪʃnsi ; NAmE dɪˈfɪʃnsi /
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