now and then

同义
now and again now and then occasionally on occasion once in a while from time to time at times
词性
r
解释
sporadically and infrequently
示例
he was arrogant and occasionally callous|open areas are only occasionally interrupted by clumps of trees|they visit New York on occasion|now and again she would take her favorite book from the shelf and read to us|as we drove along, the beautiful scenery now and then attracted his attention