學個詞 Learn A Word:2065_deficiency

　　今天我們要學的詞是 deficiency. Deficiency 名詞，意思是欠缺，缺陷。一項最新研究發(fā)現(xiàn)，People who suffer from a Vitamin D deficiency are at a higher risk for developing high blood pressure. 患維生素D缺乏癥的人更容易得高血壓。Each year, Vitamin A deficiencies cause 300,000 children worldwide to go blind. 維他命A缺乏癥每年都會在全球造成30萬個孩子失明。好的，今天我們學習的詞是 deficiency, deficiency, deficiency...