birthn.分娩；出生；诞生；血统v.分娩；产生adj.有血亲关系的Birth paining分娩阵痛birth nuptial婚姻出生率birth prccess产程birthing room家庭式分娩室birth forests桦木林birth paresis产后轻瘫birth controln.节育birth planned计划出生率Birth Worship生殖崇拜birth concept生育观念