天火字典

英日字典：ｵﾕｾ螟

ｵﾕｾ螟

､ｵ､ｫ､ﾎ､ﾜ､

(oK) (v5r,vi) (1) to go upstream
(2) to go back (in time, to origin)
to date back to
to trace back to
to make retroactive

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