| 单词 | vitamin a |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔cod-liver oil〕An oil obtained from the liver of cod and related fishes and used as a dietary source of vitamins A and D.鱼肝油：一种从鳕和有关的鱼获得的油，用作维他命A和D的饮食源美国传统〔intake〕Make sure you have a balanced intake of vitamins A, B, C and D.要确保均衡地摄入维生素 A、B、C 和 D。牛津搭配〔nourish〕The cream contains vitamin A to nourish the skin.这种护肤霜含滋养肌肤的维生素 A。朗文当代〔positive〕There was no positive evidence that any birth defects had arisen as a result of Vitamin A intake.没有确凿证据证明，摄取维生素A会导致出生缺陷。柯林斯高阶〔positive〕There was no positive evidence that any birth defects had arisen as a result of Vitamin A intake.没有确凿的证据证明任何先天缺陷是由维生素A的摄入而引起的。外研社新世纪〔provitamin〕A vitamin precursor that the body converts to its active form through normal metabolic processes. Carotene, for example, is a provitamin of vitamin A.维生素原：一种由身体通过正常新陈代谢过程，将其转化成活跃形式的维生素的前体，比如，胡萝卜素是维生素A的维生素原美国传统〔resistance〕Vitamin A helps build resistance to infection.维他命A有助于增强机体的抗感染能力。麦克米伦高阶〔retinoid〕Any of various natural or synthetic derivatives of vitamin A.类维生素A：几种天然或合成的维生素A衍生物美国传统〔richness〕Liver and kidney are particularly rich in vitamin A.肝脏和肾脏的维生素A含量尤其丰富。柯林斯高阶〔rich〕Liver and kidney are particularly rich in vitamin A.肝脏和肾脏中尤其富含维生素A。外研社新世纪〔rich〕Pineapple juice is rich in vitamins A and B.菠萝汁富含维生素 A 和维生素 B。剑桥高阶〔twice〕Double cream contains approximately twice the quantity of fat-soluble vitamins as single cream.高脂厚奶油中脂溶性维生素的含量大约是稀奶油的两倍。柯林斯高阶〔vegetable〕Vitamin A is found in liver and green vegetables .动物肝脏和绿色蔬菜中含有维生素 A。朗文当代〔vitamin〕Potatoes provide vitamins A and C, as well as calcium.土豆提供维生素 A、维生素 C 和钙。牛津搭配〔vitamin〕Some people are getting too much vitamin A.有些人摄入的维生素 A 过多。牛津搭配〔xerophthalmia〕Extreme dryness and thickening of the conjunctiva, often resulting from a deficiency of vitamin A.干眼病：由于缺乏维生素A而引起的严重的眼球干燥和结膜增厚美国传统 |
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