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sometimes; occasionally; at times; from time to time; now and then; once in a while; at intervals
seasonal; of the season; appropriate (for the season or occasion)
時々公園を散歩に行く。
I sometimes go for a walk in the park.
時々あの映画のことを思い出す。
I sometimes think about that movie.
時々失敗するけどそれも勉強になるよ。
I fail sometimes, but that's also a learning experience.