The unemployment rate actually rose, to 9.1%, in May: the rate of job creation is barely keeping track with the natural increase in the working-age population.

5月份失业率实际上升到9.1%：职位创造率只与劳动年龄人口增长率持平。

youdao

In recent years, 90% of natural grass have shown various degrees of degeneration against exceptional weather word-wide and exceeding fast increase of population in pasturing areas.

近年来，在全球性的气候异常、牧区人口过快增加的背景下，90%的天然牧草出现不同程度的退化现象。

youdao

Natural regeneration and dispersal of artificial S. caseolaris population had more or less occurred, which may increase the structural complexity and stability of the artificial population.

海桑人工种群已经出现某种程度的自然更新和扩散，这将有利于增加海桑人工种群的结构复杂性和稳定性。

youdao

Russia will probably achieve natural population growth in 2012, but, before the recent uptick in births and decrease in deaths, the country experienced a substantial natural population increase as recently as 1991.

FORBES: Walter Russell Mead's Very Strange View of German Ascendancy and Russian Decline

Russian demographics have now improved to the point that if the trends of the first half of 2012 hold for the rest of the year, that is if the birth rate for the whole year increases by around 6.7% and the death rate for the whole year decreases by around 2.9%, then Russia will actually record a small natural increase in population.

FORBES: Russia is on Track to Record Natural Population Growth in 2012

Combined with natural increase, America's population will nearly double in the next 70 years.

ECONOMIST: Huddled masses