常見例句雙語例句Conclusion In order to reduce mortality rate of the residents in the area, it is necessary to strengthen the administration of natural and social environment of the area.結(jié)論 為了降低該區(qū)居民死亡率，既要進一步加強其自然環(huán)境的治理，也應(yīng)重視社會環(huán)境的治理。d.wanfangdata.com.cn權(quán)威例句Whale researchers use population models that factor a species' reproductive rate and its natural mortality to come up with an estimate of how many are likely dying.MSN: Feds to reroute SF Bay ships to protect whales 返回 natural mortality rate