问题描述：
与come about 有关
how did it come about that such an unexpected event had happened?
这个句子怎么理解啊.翻译成什么,句子中的it应该是指代后面的THAT从句,
how did it come about that such an unexpected event had happened?
这个句子怎么理解啊.翻译成什么,句子中的it应该是指代后面的THAT从句,
问题解答：
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