| 例句 |
once in a blue moonphrase not oftenOnce in a blue moon, this car just refuses to start. They only see each other once in a blue moon as they rarely are in the same location at the same time. infrequently, little, rarely ne'er, neverepisodically, irregularly, now and then, occasionally, seldom, sometimes, sporadically frequently, oft, often, oftentimes(or ofttimes) customarily, generally, habitually, ordinarily, routinely, usuallyalways, constantly, continually, continuously, endlessly, eternally, ever, everlastingly, evermore, forever, invariably, perennially, perpetually, unceasinglychronically, recurrently, repeatedly |