Primary amenorrhea is when a female hasn't had her first menstruation, called menarche, by age 16, despite normal growth and having started puberty.
原发性闭经指女性在16周岁前没有初次月经(即初潮),尽管生长发育、进入青春期均无异常。
单词 | first menstruation |
例句 |
原声例句
Osmosis-生殖 Primary amenorrhea is when a female hasn't had her first menstruation, called menarche, by age 16, despite normal growth and having started puberty. 原发性闭经指女性在16周岁前没有初次月经(即初潮),尽管生长发育、进入青春期均无异常。 |
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