Blue stragglers are so named because they seemingly lag behind in the aging process, appearing younger than the population from which they formed.

蓝色的散兵游勇是这样命名是因为他们似乎落后在衰老的过程，出现以下的人口，他们从那里形成。

youdao

And with the process of population aging was speed up in rural area. The fluctuating of mortality was influenced by demographic and non-demographic factors in common.

农村地区人口老化程度加快，人口因素与非人口因素共同影响死亡率的变化。

youdao

As one of the consequences of the rapid demographic transition in China, the accelerating process of population aging is changing the relationship between labor supply and labor demand in urban China.

人口加速老龄化是中国人口快速转变的代价之一，城镇劳动供求形势也将因此出现重要变化。

youdao