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go back
sakanoboru
meaning: go back
この習慣しゅうかん、江戸えど時代じだいまでさかのぼるらしいよ。
kono shuukan, edo jidai made sakanoboru rashii yo.
Apparently this custom goes all the way back to the Edo period. casual
講師こうしは話はなしを十年前じゅうねんまえまでさかのぼりました。
koushi wa hanashi o juunenmae made sakanoborimashita.
The lecturer went back to ten years earlier in his talk. neutral
sakanoborugo back (in time)G1