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時々， 時時， 時どき， ときどき
1. sometimes, occasionally, at times, from time to time, now and then, once in a while, at intervals
2. seasonal, of the season, appropriate (for the season or occasion)
有时，偶尔，间或，不时，时而；季节性的；属于某个季节的；适合(某个季节或场合的)
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遊びに来る， 遊びにくる， あそびにくる
1. to come and stay, to drop in, to visit
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