the source of milk的用法和样例：
例句
- According to experts, these two standards, the milk is the most important reference, which is the source of all problems.
据专家介绍，在这两个标准中，奶源是最重要的参考指标，它是一切问题的源头。 - Allergens to which the infant is sensitized can be conveyed in the milk but the presence of such allergens is rarely a valid reason to stop breast-feeding.
虽然婴儿对于人奶的变异源过敏的话能更换奶源，但是变异源的存在很少会成为终止母乳喂养的原因。
