胚胎营养素

例句：

1. 1. The baby needs all the nutrients it can get from its mother's milk.
   婴儿需要从母乳中获得所有所需的营养。
2. 2. Researchers are studying how to improve the quality of embryonic stem cells.
   研究人员正在研究如何提高胚胎干细胞的质量。
3. 3. The diet of pregnant women should include enough vitamins and minerals for the developing fetus.
   孕妇的饮食应该包含足够的维生素和矿物质，以供发育中的胎儿使用。