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振舞う， 振る舞う， ふるまう
1. to behave, to conduct oneself, to act
2. to treat (someone) to (food or drink), to entertain (e.g. to lunch)
招待，款待；行为举止，表现
に
1. at (place, time), in, on, during
2. to (direction, state), toward, into
3. for (purpose)
4. because of (reason), for, with
5. by, from
6. as (i.e. in the role of)
7. per, in, for, a (e.g. "once a month")
8. and, in addition to
9. if, although
tbd