There has been tremendous declines in fertility. The key has been the prevention of unwanted births, really around the globe.
生育率在大幅下降。关键是真正做到在全球各地预防计划外生育。
They point out that fertility clinic freezers worldwide are bulging with thousands of unwanted embryos slated for disposal.
他们指出全球各地的生殖中心门诊冷藏着上千个准备丢弃的多余的胚胎。
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