保持率
... conservation process ==> 守恒过程 conservation rate ==> 保持率 conservation regulator ==> 恒定调节器 ...
通过针对盐碱地区公路绿化采取综合栽植技术措施,可有效提高绿化栽植的成活率和保存率。
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。
It was introduced by an American charity called Conservation International, which realised the going rate for logging concessions was often so low that it could afford to outbid the foresters.由一个叫国际保护组织的美国公益机构提出。他们发现土地租赁给伐木业者的价格通常非常低,而他们甚至可以出价高过那些伐木公司。