There are both historical and practical reasons for the general backward situation of the economy and culture in the western areas compared with the eastern areas.
西部经济文化总体水平落后于东部地区，有历史原因，也有现实原因。
The sixth paper presents a general situation of earthquake insurance in Japan, covering the historical background, the current status and the existing problems in this field.
文章概述了日本地震保险概况，介绍了日本进行这方面工作的历史背景及其现状和当前所存在的问题。
The sixth paper presents a general situation of earthquake insurance in Japan, covering the historical background, the current status and the existing problems in this field.
文章概述了日本地震保险概况，介绍了日本进行这方面工作的历史背景及其现状和当前所存在的问题。
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