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周日，在拉帕尔马，加那利群岛，65英寸深的港口，有一艘救生艇在进行军事安全演习。突然，缆绳“咔”一声折断，全体船员困在了下面，其中五人死亡，官方...
News My comment: There are lots of similar cases in the world , which wi...
应数1602 刘雨晴1605010119 应物1701 李宁 1605020120 自动1602 李昌昊1603010210 自动卓越16...
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There is a research to study which country is the happiest country in...