But the rate of extinction is far from constant.
但是灭绝的速度同一个恒定的常数有着相当大的距离。
Once forest cover does start increasing, the rate of extinction should dwindle.
一旦森林覆盖开始增加，灭绝的速度应该变小。
On the other hand, humanity's malignant effect on the environment has accelerated the rate of extinction for plants and animals, which now reaches perhaps 50,000 species a year.
从另一方面说，人类对环境的恶意影响加速了动植物的灭绝，现在每年大概有多达50,000种物种从地球上消失。
This was coupled with the natural rate of extinction of existing hereditary titles and the near abolition of the hereditary element of the House of Lords at the end of the twentieth century.
这是加上自然灭绝速度的现有遗传冠军和近废除遗传因素的上议院在二十世纪末。
According to the International Union for Conservation of Nature (IUCN), the rate is between 1, 000 and 10, 000 times higher than the natural rate of extinction. This is largely due to human activity.
国际自然保护联盟(IUCN)认为，这个速度比物种自然灭绝的速度高出一千至一万倍，很大程度上是由于人类的活动导致。
The rate of species extinction is accelerating to dangerous levels.
物种灭绝的速度不断加快，已经敲响了警钟。
The extinction rate of plants in this area is higher than their colonization rate.
在沙漠化过程中植物种的绝灭速率大于定居速率。
Current extinction rate projections may be overestimating the role of habitat loss on species, a study suggest.
一项研究显示，现有物种灭绝速率预测可能高估了栖息地缺失对物种的影响。
Conclusion to definitude effecting clinical factor of tumor extinction, it is important to formulate radiotherapy plan reasonable, estimate prognosis and amelioration survival rate.
结论明确影响肿瘤消退临床因素，对合理制定放疗计划，判断预后，改善生存率具有重要意义。
Our global society has started to destroy species of other organisms at an accelerating rate, initiating a mass extinction episode unparalleled for 65 million years.
我们人类社会已经开始在加速毁灭其他生物物种，并由此开启了一个6500万年以来最大规模的物种灭绝。
This work has laid the foundation of quantitative measurement of rain rate and the discussion of extinction properties of radar wave in rain clouds.
为双线偏振雷达定量测量降雨工作及讨论雨区对雷达波衰减打下了基础。
This work has laid the foundation of quantitative measurement of rain rate and the discussion of extinction properties of radar wave in rain clouds.
为双线偏振雷达定量测量降雨工作及讨论雨区对雷达波衰减打下了基础。
应用推荐