基本解釋[環(huán)境科學技術]生理出生率英漢例句雙語例句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。physiological natality更多例句專業(yè)釋義環(huán)境科學技術生理出生率