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。

youdao

youdao

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。

youdao

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