比如，他希望看到私人机构来管理全国的健康诊所，并且允许企业性质的团体涉足由公共财政负担开支的社会保障制度，扮演替代者的角色。
He wants to see the private sector run national health clinics, for example, and to allow companies to offer alternatives to publicly financed social security.
演替驱动力主要有：胶林郁闭度、胶林抚育管理措施、气候和土壤条件以及胶林植被本身的生物学特性。
The main drives of succession include canopy density of rubber forest, management, climate, soil condition and the biological properties of vegetation.
导致这一演替的主要原因为作物布局、耕作制度、栽培方法、管理技术的变化和农药化肥的过量施用。
The main reason for this succession might be the changes in crops distribution, cultivation type, planting method, management technique and over-use of chemical pesticides and fertilizers.
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