在灾害频发的夏季，国家防汛抗旱总指挥部不断发布各个级别的应急响应。

As one of the countries most vulnerable to natural disasters, China is establishing a disaster emergency response system.
作为遭受自然灾害最为严重的国家之一，中国正在建立一套灾害应急响应制度。

Disaster emergency response should address the immediate and priority needs resulting from a disaster.
灾害应急响应处理灾害发生之后亟待解决的优先需要。