Yet 50 years ago Japan faced a demographic crisis of another sort: a population explosion.

在50年前，日本却面临着另一个人口危机：人口激增。

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He was on a foot patrol, part of a larger operation to provide security for the local population in Sangin, when the explosion happened.

战斗发生时他正在步行巡逻，以保护Sangin镇当地的居民安全。

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With the population explosion in the city and decrease of land resources, using land in stereoscopic form has become a general trend all over the world.

随着城市人口的快速增长和土地资源的日趋稀缺，以立体方式利用土地，已成为世界范围的普遍趋势。

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They are known as Asian Carp and the explosion of their population in the Illinois River is a concern to large-river ecologist Kevin Irons.

VOA: standard.2010.07.20

Moreover, the likelihood of a population explosion appears to be receding.

ECONOMIST: A Survey of the 20th Century

There is a population explosion in Nepal.

CNN: Going Nowhere

Is the human population explosion a mere pretext for biological profiteering?

FORBES: A Call to Agricultural Action