In 1950 a British paediatrician, Dr James Tanner, introduced a system for mapping the five stages of puberty in boys and girls.
1950年,英国儿科专家詹姆斯•谭纳(JamesTanner)提出一个体系,把男女孩青春期划分为五个阶段。
In 1950 a British paediatrician, Dr James Tanner, introduced a system for mapping the five stages of puberty in boys and girls.
1950年,英国儿科专家詹姆斯•谭纳(JamesTanner)提出一个体系,把男女孩青春期划分为五个阶段。
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