sweetpigor

http://www.babycenter.com/0_your-15-month-olds-language-and-cognitive-development-speaki_1213394.bc?scid=mbtw_post15m_2w:1156&pe=MlV6ajFndnwyMDExMDYyMw..

上面是baby center上的一篇文章，觉得豆伴儿有好多地方都符合，记在日记里留作纪念，顺便把豆...