physiological natality

常見例句

雙語例句

• The effect of crowding and physiological stress and shortage of food resources were the main reasons for the decline of population natality and yearly increase rate.
  種群密度過高産生的擁擠傚應(yīng)和食物資源不足是造成種群出生率和年度增長率下降的主要原因。
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