正在长牙齿的婴儿喜欢咬硬物.Babies who are getting new teeth like something hard to bite on.这样有时能发现硬物或肿块,这是肿瘤的信号.This can sometimes reveal a hardening or lump that signals a tumor.您兜中的硬物能取出来让我看一下 吗 ?May I see the hard object in your p...