依据美国小儿科协会来说，很多婴儿缺少这些必要的养分成分。

According to the American Academy of Pediatrics, many infants are deficient in this vital nutrient.

youdao

依据美国小儿科协会来说，很多婴儿缺少这些必要的养分成分。

According to the American Academy of Pediatrics, many infants are deficient in this vital nutrient.

youdao