短语
中文翻译：在很久以前
同义词：
['once upon a time', 'in the olden days', 'bygone eras']
例句：
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1. In days of yore, people used to live in caves.
在很久以前，人们曾经住在洞穴里。
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2.The old man remembered his childhood in days of yore.
那位老人回忆起他童年的往事。
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3.She spent her childhood in days of yore.
她度过了她的童年时光。