人口

• Demographers are perhaps best known for making population projections .
  人口学家或许在人口预测上最为知名。
• Natural increase simply measures the excess of births over deaths .
  人口的自然增长是出生抵消死亡后的增长。
• Unemployed people are sometimes characterized as "surplus labor. "
  有时，失业人口被说成为“过剩的劳动力。”
• The situation is analogous to stage i of the demographic transition theory .
  这相当于人口过渡论的第一阶段。
• We progressively divide this population into classes and sub-classes .
  我们将这些人口逐步划分为阶层和次阶层。
• More than half of the heads of poor families work at least part time .
  贫困家庭人口中有一半以上只工作部分时间。
• Almost 20% of the uk working population did not possess a bank account .
  英国的从业人口差不多有20没有银行帐户。
• We have at least four-fifths of the population of the globe upon our side .
  我们这边至少拥有地球上五分之四的人口。
• They are the only possible means of dealing with excessive fertility .
  它们是解决人口出生率过高这一问题的唯一手段。