LCBP model predicts the weight of trend on terms that have considered such environmental factors as the economic income level, population, age composition level and flow of floating population, etc.

其中LCBP模型在考虑了经济收入水平、人口、年龄结构层次及流动人口流量等环境因子的条件下对趋势分量进行预测。

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The number of people searching for work in a less developed country depends primarily on the size and age composition of its population.

在欠发达国家中，寻求职业的人数主要取决于该国人口数量的多少与年龄结构。

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Many of the people that will contribute to it have already been born, so short of some catastrophe that kills off large numbers of people, or some Viagra-fuelled leap in birth rates, population numbers and age composition can be predicted with fair accuracy for decades ahead.

ECONOMIST: Demographics: Greying globe | The