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九世纪

1.
the 9th century
大约在西元九世纪(the 9th century)的时候,当时的人相信人的瞳孔是很坚硬的物体(a hard object),而且当时的人就称瞳孔为"apple",因...
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Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard
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