春天的海滩边,2岁的小青起劲地挖着沙子,他让沙子从手里慢慢地漏下去,然后用力地拍打着沙堆。一会儿他又将小手浸泡到冰凉的海水中,迅速地拿出来,兴奋地挥舞着,接着又跑回去堆沙子。他津津有味地玩着,全然听不见妈妈的喊叫……触觉是皮肤受到机械刺激时产生的感觉。宝宝触觉的 Spring beach, 2-year-old Green vigorously dug sand, he let the sand slowly drain from his hand, and then patted the sand. For a moment, he soaked his little hand into the cold seawater, quickly took it out, waved it excitedly, and then ran back to the pile of sand. He relished playful, totally can not hear my mother’s shouting ... ... Tactile sense of the skin by mechanical stimulation. Tactile baby