日本的地震和海啸是一个严酷的提醒，提醒我们关注东亚最大的挑战之一：面对自然灾害的脆弱性。
The earthquake and tsunami in Japan serve as a stark reminder of one of East Asia's greatest challenges - its vulnerability to natural disasters.
自然地理界面所处地区因其环境脆弱性常发生自然灾害，并对相邻自然地理系统形成不利影响。
Because of the environmental volatility of the physical geography interfaces, there take place the natural disasters in these areas, and harmful effects to the closed physical geography systems.
从多方面分析了它的自然条件，揭示了其自然环境的脆弱性。
Its nature conditions were analyzed from many aspects and the fragility of its nature environment was revealed.
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