基本解釋[環(huán)境科學(xué)技術(shù)]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.種群密度過高產(chǎn)生的擁擠效應(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。physiological natality更多例句專業(yè)釋義環(huán)境科學(xué)技術(shù)生理出生率