sex ratio at birth

常見例句

權(quán)威例句

• India does, in fact, publish data (since 1999) on the sex ratio at birth.
  ECONOMIST: Letters
• The sex ratio of 15-year-olds in 2005 was not far from the sex ratio at birth in 1990.
  ECONOMIST: Gendercide
• Still, it is significant the sex ratio at birth is improving, not worsening.
  ECONOMIST: India's skewed sex ratio: Seven brothers The
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