Three decades of strict family-planning policies have exacerbated a traditional preference for boy children and contributed to a shortage of marriageable women.
三十年来的严格的人口政策加重了传统意义上的男孩为主的思维并导致了适婚妇女的短缺.
2
The paper gives a strict proof to one property of the continuous convex preference.
本文给出连续凸偏好的一个性质的严格证明。
3
Father's preference and mother's strict punishment were in negative correlation with the scores of extraversion-introversion (P< 0.05).