thank you so much!
回答: 幼儿的左手食指靠拇指的外侧,从指根向指尖撸,一下一下,轻轻的,多少下看小孩大小,我儿子几个月时只是十来下就行了。也推荐有这方向问
由 sweetowl
于 2012-05-03 10:34:27
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