Calcium is an essential nutrient for building strong bones and keeping them healthy.
钙是生成强壮骨骼的必须营养成分，并保持骨骼健康。
It would be wrong to purposely deprive people of an essential nutrient in order to study the effects.
为了获得实验结果而有目的地剥夺人所需的基本营养素的做法是不对的。
Sulfur is an essential nutrient for plants.
硫是植物的一种重要的营养元素。
Iron is an essential nutrient with crucial biological function.
铁是人体必需的微量元素，有着重要的生物学功能。
Therefore, dietary nucleotide is a conditionally essential nutrient.
因此，核苷酸是一种半必需营养素。
And nitrogen is one of those and in fact it's an essential nutrient.
氮就是这些物质之一，事实上它是一种主要的营养物质。
Phosphorus is an essential nutrient for human being and living things growing.
磷在人及生物生长发育过程中具有重要作用。
Iodine is an essential nutrient for growth and normal development of the brain.
碘是一种对于生长和大脑的正常发育必需的营养素。
Potassium is an essential nutrient found in many natural and man-made food ingredients.
钾是在许多天然食品和人造食品成分中存在的一种基本营养素。
Choline, an essential nutrient found in eggs, stimulates brain development and function.
胆碱——鸡蛋的基本成分之一，对大脑的发育和功能有刺激作用。
The Vitamin E is playing an important role in improving beef quality as the essential nutrient of the animal.
维生素E作为动物的必需营养素，在改善牛肉品质中发挥着重要作用。
Cadmium is one of the most toxic heavy metals and is not an essential nutrient element for plant, animal and human being.
镉是动物和植物的非必需元素，也是毒性最大的重金属之一。
Zinc is an essential nutrient element for biological organisms, but it is toxic to plant, animal and human at excess levels.
锌是生物必需微量元素，但过多时对动植物都有毒害。
Vitamin D3 is an essential nutrient for bone and immune system health; its main source is sunshine, and it is synthesized through the skin.
维生素d 3对骨骼和免疫系统来说，是一个重要元素，主要来源是通过太阳光照，由皮肤合成。
Iodine - is important for the normal functioning of the thyroid gland as it is an essential nutrient required for the synthesis of thyroid hormones.
碘-碘是维持甲状腺正常机能的重要元素因为它是合成甲状腺激素必不可少的成分。
A strictly plant-only diet would lack vitamin B12 - an essential nutrient naturally occurring in many animal products that can also be manufactured directly from bacteria.
如果严格地只吃植物，那会使人缺乏维生素b12——一种存在于肉类产品中的非常重要的营养物质，也可以直接用细菌制造出来。
Deficiency disease a disease caused by deficiency of a particular essential nutrient (such as a MICRONUTRIENT or trace element), usually with a characteristic set of symptoms.
由于缺乏一种特殊的必要营养物质(微量营养素或微量元素)而导致的疾病，通常表现出具有特征性的一系列症状。
Dietary sources of nucleotides may be conditionally essential nutrient, which play important role in maintaining normal immune function, intestinal development and liver function.
日粮核苷酸可能作为一种条件性必需营养物质，在维持机体正常免疫功能、肠道发育和正常肝脏功能方面具有重要营养生理功能。
Choline assists detoxification reactions in the liver. Although choline can be synthesized from methionine or serine, recent evidence indicates that choline is an essential nutrient.
胆碱有助于肝脏解毒。尽管胆碱可由蛋氨酸和丝氨酸合成，近期的证据表明胆碱是重要营养物。
Choline, an essential nutrient found in eggs, stimulates brain development and function. It has also been linked with increasing memory retention and recall as well as improving alertness.
胆碱——鸡蛋的基本成分之一，对大脑的发育和功能有刺激作用。这与延长记忆存留、增进回忆，以及提高警醒度有关。
Choline, an essential nutrient found in eggs, stimulates brain development and function. It has also been linked with increasing memory retention and recall as well as improving alertness.
胆碱——鸡蛋的基本成分之一，对大脑的发育和功能有刺激作用。这与延长记忆存留、增进回忆，以及提高警醒度有关。
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