宝宝的体格发育平均身长:男孩约69.5厘米,女孩约67.6厘米。平均体重:男孩约8.3千克,女孩约7.7千克。运动能力: 能不用依靠地坐一会儿。宝宝坐得稳了,视野比平躺着开阔了许多,也有了更多的自由,双手可以更方便地摆弄玩具。已学会从俯卧转到仰卧,再从仰卧转到俯卧,常常为够取远处的玩具而继续翻滚,从大床的一头滚到另一头去取。这时要当心从床上掉下而发生意外。给第二块小积木时,不扔掉第一块。很熟练地将东西从一只手传到另一只手。扶立时臀和膝关节可略微弯曲,做蹬跳动作。 Baby physical development average length: about 69.5 cm for boys and 67.6 cm for girls. Average weight: about 8.3 kg for boys and 7.7 kg for girls. Athletic ability: can sit without relying on for a while. The baby is sitting steady, with a wider field of vision than lying down, more freedom, and more comfortable toys with both hands. Has learned to turn from prone to supine, then from supine to prone, often to get away from the toy and continue to roll, roll from one end of the bed to the other to take. At this time, be careful to fall from the bed accident. To the second small building blocks, do not throw away the first piece. Very skilled to transfer things from one hand to the other hand. When standing up, buttocks and knees can be slightly bent, do pedal jump action.