Grassland degradation was described as a process of retrogressive succession of grassland ecosystem resulted from human activities ( over grazing , reclaim ) and unfavorable natural conditions .
草地退化是过度放牧、开垦土地等人为活动及不利自然因素影响下草地生态系统逆行演替的一种过程。
Is retirement of stethoscope progressive or retrogressive ?
听诊器下岗是进步还是退步?
Analysis on the retrogressive stages and intensity of terra near .
黑土退化阶段与强度分析。
The prime minister is still hoping that the voters will choose his forward-looking policies over the often retrogressive policies of the national parties .
首相仍然希望选民将会选择他的向前看政策,而不是民族党派时常倒退的政策。
He thought the vernacular chinese movement was successful , for both progressive and retrogressive ideas could be represented in vernacular chinese .