| 1. | Effect of vitamin a deficiency on the development and growth of rats
缺乏对大鼠体格生长及生殖器官发育的影响 |
| 2. | Effect of vitamin a deficiency on rat ' s sperms and enzymes activities of testis
缺乏对大鼠生精能力及睾丸标志酶活性的影响 |
| 3. | Vitamin a deficiency
维生素a缺乏症 |
| 4. | As many as 100 million children suffer from vitamin a deficiency , a leading cause of blindness
数量多达1亿的儿童缺乏维生素a ，这是导致失明的主要原因。 |
| 5. | In south asia , the level of sub - clinical vitamin a deficiency in pre - schoolers may be as high as 1 in 3
在南亚，学前的儿童三个人里就有一个人有亚型维他命 |
| 6. | Vitamin a deficiency may lead to blindness , and is a major risk factor in infant and maternal mortality even at low levels
可能导致失明，甚至即使是轻微程度也是造成婴儿和母亲死亡的一个主要危险原因。 |
| 7. | Therefore , the most common nutritional problems in poor rice - eating communities are protein - energy malnutrition and iron , iodine and vitamin a deficiencies
因此，在以米为主食的贫穷地区最常见的营养问题便是蛋白质和热量的营养失调以及铁，碘和维他命 |
| 8. | Scientists in britain have developed a strain of genetically modified rice which they say could reduce vitamin a deficiency and childhood blindness in developing countries
英国科学家最近成功培育出了一种新型的转基因大米，该种大米可以填补人体维生素a的缺乏，还可以降低发展中国家儿童失明率。 |
| 9. | The elimination of four major , easily preventable diseases - measles , tetanus , whooping cough , and polio - eradication of iodine and vitamin a deficiencies , and the global availability of oral rehydration therapy are all achievable early in the next century
各种条约与协定只有在付诸实行时才有效力，而当一个汽水罐份量的钸就够制造一颗原子弹时，我们最好还是尽其所能的执行所有的条约与协定。 |
