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往復， おうふく

1. making a round trip, going and returning, coming and going 2. round-trip ticket, return ticket 3. correspondence, exchanging (of letters) 4. keeping company (with), socializing, visiting each other

往返

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片道， かたみち

1. one-way (trip) 2. one-way ticket

单程（旅行）；单程票

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