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生命从受精卵开始经过一系列复杂而规律的演变过程发育为新的个体 ,这一过程经历了人胚的早期发育阶段 (第 1～ 4周 )———胚胎完成期 (即器官形成期 ,第 5～ 8周 )———胎儿期(第 9周～出生 )。而胚胎对其母体子宫内环境的适应性不仅影响胎儿的生长发育 ,也注定了其生命历程
Life begins with a series of complex and regular evolution processes from fertilized eggs into new individuals. The process goes through the early stages of human embryo development (Weeks 1-4) - the period of embryo completion (ie organogenesis, Weeks 5-8) --- Fetus (Week 9 ~ Birth). The embryo adaptability to the mother’s uterus not only affects the growth and development of the fetus, but also destined to its life course