by ZyeX | Nov 25, 2015 | Blog of Zyex
從胚胎開始，脊椎的彎曲綫就衹有一個曲綫， 之後就會慢慢變直且有腰椎曲度的形成， 之後他們的活動，如擡頭，爬等等的動作， 就會慢慢形成更完整的四个曲度。 From embryo begin, spine start from one curvature slowness of development will build become four curvature. 人體的四個曲綫 Human have Four curvature ...
