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It is a grave mistake to theorize before one has data.
在尚未掌握数据资料之前建立理论，是一种严重的错误。
youdao
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It is a grave mistake to theorize before one has data.
在没有证据之前就得出理论，是重大错误。
youdao
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It is a grave mistake to theorize before one has data.
在没有证据之前就得出理论，是重大错误。
youdao