たま

(1)not frequent; not occurring regularly or at short intervals; "infrequent outbursts of temper"

(2)頻繁でない

(3)定期的に、または、短い間隔で起こらないこと

(4)recurring only at long intervals; "a rare appearance"; "total eclipses are rare events"

(5)長い休止期間を経てのみ再発するさま

(1)