大家在查： secondary sterility secondary structure secondary structure of protein secondary structure prediction secondary succession secondary sedimentation tank secondary road secondary response secondary recrystallization secondary reaction

secondary sex characters

美英

妇产科英文词汇 - 英语学习 - 百慕社区 ... menarche 初潮 secondary sex characters 第二性征 postmenopausal 绝经后的 ...

If a girl shows development of secondary sex characters at the age of 8 , and a boy at 9, doctors consider it a case of early puberty .