sex ratio at birth

短語詞組

短語

• managing sex ratio at birth 出生性別比治理
• High Sex Ratio at Birth 出生性別比偏高
• Sex Ratio at Birth Time 時(shí)點(diǎn)出生性別比
• the sex ratio at birth 出生性別比
• statistical sex ratio at birth 出生統(tǒng)計(jì)性別比
• sex ratio unbalance at birth 出生性別比失調(diào)
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