kòng zhì rén kǒu shù liàng
nínshìfǒuzàixúnqiú:控制控制人控制人口数量控制 控制人 控制人口数量gèngduōjiéguǒ...
yīngwénjièshì:
  1. n.  promotion of family planning to control the population size and improve the health of the people
  2. n.  control the population size