population drops翻译
population drops的基本解释
读音: 美: 英:
人口下降：指某个地区或国家的人口数量减少。
例句
However, if safe areas like those prey animals have in the wild are provided, the prey population drops to low level but not extinction.然而，如果能给被捕食的动物提供一些它们在野外时那样的安全区域，它们的数量会降到很低但不灭绝。After 2000, the registration population drops year by year.从2000年以后，报名人数逐年下降。
The ratio of elders and children to total population drops since then as the number of senior citizens sharply rises.自此之后，中国老年人加小孩占总人口的比例开始下降，老年人口比重正大幅提高。
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