surplus rural labor (laborers) 农村剩余劳动力
survival of the fittest 适者生存
temporary residence permit (card) 暂住证
the only child in one's family 独生子女
transient population 流动人口
upgrade the ideological and ethical standards 提高思想道德素质
urban legend 都市传奇
values 价值观
vicious circle 恶性循环
virtuous circle 良性循环