microbian

1."Defabing It defends the baby against on they potation microbial all the potential microbian that can affect inhim.

母乳帮助婴儿抵抗所有潜在的对他们不利的微物。

2.Introduce the general idea: human body need all kinds of nourishment during the life(such as water, inorganic acid, protein, glycolipin, microbian mineral, oxygen),blood cycle for digestion.

内容导入：人体在动中需要各种营养（、无机盐、蛋白质、糖类、物矿物质，氧气），其消化吸收需通过血液循环系统。