Babies which have been four months of age are experimenting with active motion against gravity. They use their fingers to the touch their faces, bodies, and knees when lying on their again.??'樣'這個選'中,�?'以一'�?簡�?字�?'容轉�?'正體中'�?'容'seven 'ン'イ'・'�?'�?'�?'�?'ル'ク'ン橋�?'�?'�?'に,'�?… Read More