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そういえば， そう言えば
1. now that you mention it, come to think of it, that reminds me, on that subject, speaking of which
tbd
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毒する， どくする
1. to be a bad influence (on something), to corrupt, to poison
tbd
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