And for the rest of the world, these foods are needed to provide key nutrients, such as vitamin B12 and vitamin A, which are critical for brain function, for vision and immunity.

在世界上其他地区，这些食物是供关键营养物，比如维生B12和维生A，对脑功能、视力和免疫系统十分重要。

In fact, one nutrition website says that one cup of cooked, mashed pumpkin can give you more than 200 percent of your daily recommended amount of Vitamin A.

实际上，一家营养类网站指出，一杯烹制后南瓜泥能供人体每日所需维生A含量两倍还多。

But When they gave high vitamin D and normal vitamin A, they got hypervitaminosis D.

但是当给予火鸡大剂量维生 D 和正常量维生 A 时，他们则会出现维生D过多。

Another kind of treatment involves retinoids, which are compounds related to vitamin A.

另一种药物是类维生A，是维生A化合物。

They have betacarotene, which is an important part of the vitamin A pathway.

它们含有β胡萝卜，这是维生 A 途径重要组成部分。

Well, carrots do contain a lot of vitamin A and another vitamin called betacarotene.

嗯，胡萝卜确实富含维生A以及另一种名为贝塔胡萝卜维生。

Vitamin A helps make white blood cells, key in the body's defense, helps shape bones and improves vision by keeping the cells of the eye in check.

维他命A有助于白血球形成，它们是身体防御关键，帮助骨骼塑形并通过控制眼球细胞高视力。

Some groups are also given vitamin A, like young children and the severely malnourished, which act as an immunomodulator that boosts the antibody responses to measles and decreases the risk of serious complications.

针对某些幼儿和严重营养不良患者，也可施维生A，以起到免疫调节剂作，增强抗体对麻疹反应，降低严重并风险。

Testing the theory that antioxidants could protect against cancer, individuals with a high risk of lung cancer were given high doses of beta-carotene and retinol, two forms of vitamin A.

他们想测试抗氧化剂可以预防癌这一理论，让高肺癌风险人摄入高剂量β-胡萝卜和视黄醇这两种维生 A。

You can snack on organ meat like liver to get your recommended Vitamin A, which is vital for eyes and bones and Vitamin D, for your bones too.

你可以吃一些像肝脏这样器官肉获得你所需维生A，这对眼睛和骨骼育很有帮助，维生D也对骨骼育有重要作。

In that way, you can do a lot in terms of nutrition control by dialling in, 'OK, I want this much potassium, this much calcium, this much Vitamin A.'

这样，你可以靠输入成分数值控制营养摄入。比如，‘我想添加多少钾，多少钙，多少维生 A。’

Priva Namanya is one of the researchers. " We have been able to show that we can increase our vitamin A levels six times, " Namanya said.

普利瓦·诺马尼亚是一位研究者，“我们能证明我们可以将维生A含量高6倍。”

It has a gene from corn and a gene from a bacterium that allow it to produce tons of beta-carotene, which in turn produces Vitamin A.

它有一个自玉米基因和一个自细菌基因，这些基因使它能够产生大量 β-胡萝卜，而 β-胡萝卜反过又能产生维生 A。

The yellow and orange stone fruits such as peaches are high in the carotenoids we turn into vitamin A and which are antioxidants.

黄色和橙色核果类水果中类胡萝卜含量很高，如桃子，这些类胡萝卜会转变成维他命 A，具有抗氧化作。

Vitamin A is missing from the food of millions of people in the developing world. The deficiency is the leading cause of childhood blindness.

在展中国家，数百万人食物中缺乏维生A。这种缺乏是导致儿童眼盲主要原因。

And usually in healthy tissue, these guys' main function is to store vitamin A and are otherwise considered quiescent, or sort of dormant.

在健康肝脏中，这些星形细胞主要功能是储存维生A，除此之外，星形细胞在其他时候被认为是不活跃，处于接近休眠状态。

The proposals include giving pregnant women folic acid and calcium supplements, promoting breast feeding, and giving young children vitamin A and zinc supplements.

这些议包括为孕妇供叶酸及钙补充物, 促进母乳喂养, 并为小孩子供维生A和锌补充。

Milk is nutritious, it contains vitamins A and D as well as protein and isn't full of calories.

牛奶很有营养，它富含维生A和D以及蛋白质，而且不含热量。

High in vitamin A, vitamin C and potassium, sweet potatoes can add fiber and other nutrients to a warm winter meal.

薯富含维生 A、维生 C 和钾元，可以为温暖冬季膳食增添纤维和其他营养。

You could give 2,134 vitamin A supplements and you could save almost one life for a longer and healthier future.

你可以供 2134 个维生 A 补充剂，并且你几乎可以拯救一条生命，使其获得更长久和健康未。