研究采用微观发生法，对大连市15名婴儿在15～23个月大的时候每周观察一次。

Amicrogenetic method was adopted to assess 15 toddlers weekly between 15 and 23 months of age.

youdao

研究采用微观发生法，对大连市15名婴儿在15～23个月大的时候每周观察一次。

Amicrogenetic method was adopted to assess 15 toddlers weekly between 15 and 23 months of age.

youdao