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Sex selection became a tool in a wider battle to stop " overpopulation " .

性别选择在阻止更广泛的“人口过剩”的斗争中成了一项工具。

An increase in crime is one of the by-products of overpopulation .

犯罪的增加是人口过多的副产品之一。

" Rather than spending millions of dollars on developing a technology with no redeeming social purpose , those resources could be aimed at reducing pet overpopulation . " Pacelle said .

帕西勒说：“这些人应当把精力用在减少宠物数量过剩上，而不是花数百万美元来研发没有社会可取性的技术。”

The law was implemented in 1978 , as a way to control overpopulation and the strain on scarce resources .

为了缓解人口过剩和资源匮乏的压力，这个法律于1978年生效。

Overpopulation was once considered a curse and an obstacle to development , but this has changed .

人口过剩曾今被认为是发展的灾难和障碍，但这种情况已经改变。