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natality n.出生率,產生率。

natant

That both natality and mortality , as well as all other phenomena of evolution , tidal movements , lunar phases , blood temperatures , diseases in general , everything , in fine , in nature s vast workshop from the extinction of some remote sun to the blossoming of one of the countless flowers which beautify our public parks , is subject to a law of numeration as yet unascertained 文林奇先生算術學士提出了富于獨創性的建議:出生與死亡,與所有其他進化現象潮汐的漲落月亮的盈虧體溫的高低一般疾病一樣。總而言之,大自然之巨大作坊中的萬物,遠方一顆恒星之消失乃至點綴公園的無數鮮花之綻開,均應受計數法則的支配,而這一法則迄今尚未確定下來。

Study on main manifestation and its contemporary meanings of the traditional morality of yi natality 試論彝族傳統道德的主要表現形式及其當代意義

Reduction of competition for food stimulates both natality and survival . 食物競爭的減少,刺激了出生率和存活力。