定义与分类是按照事物的自然和社会的客观属性加以人为的主观界定。
Definition and classification according to the natural and social objective attributes to define subjectively by human.
灾害有着自然和社会的双重属性。
这也就是通常所说的“自然灾害”具有自然和社会的双重属性。
This is commonly referred to as "natural disaster" has the dual attributes of nature and society.
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