fertility
名词 fertility:
the ratio of live births in an area to the population of that area; expressed per 1000 population per year
同义词:birthrate, birth rate, fertility rate, natality
the state of being fertile; capable of producing offspring
同义词:fecundity
the property of producing abundantly and sustaining vigorous and luxuriant growth
同义词:richness, rankness, prolificacy