deficiency

音标

美音 /dɪˈfɪʃnsi/英音 /dɪˈfɪʃnsi/

NOUN缺, 虚, 缺乏, 不足, 缺失, 缺陷, 不足之处, 欠缺, 缺损, 匮乏

If you have a documented nutrient deficiency or a health concern that may affect your ability to get adequate nutrition from food, discuss with your physician which, if any, supplements are right for you, he says.
来源:time.com
Restless legs syndrome in Indian patients having iron deficiency anemia in a tertiary care hospital
来源:zh.wikipedia.org
Although both chronic sleep deficiency and insomnia share decreased quantity and/or quality of sleep as well as impaired function, their difference lies in the ability to fall asleep
来源:en.wikipedia.org
If you have a documented nutrient deficiency or a health concern that may affect your ability to get adequate nutrition from food, discuss with your physician which, if any, supplements are right for you, he says.
来源:time.com
That leaves older adults at risk of B12 deficiency, which in some studies has been linked to an increased risk of dementia, among other problems.
来源:time.com