1. 有时,不时：for the time being 目前,暂时 | from time to time 有时,不时 | in no time 立即,马上
2. 不时,有时：for the time being暂时,眼下 | from time to time不时,有时 | get across使通过;使被理解
3. 偶尔：5、For the time being 暫時地 | 6、From time to time 偶爾 | 7、In the nick of time 及時
4. 时常,有时,不时：from now on 今后,从现在起 | from time to time 时常,有时,不时 | gain on 跑得比...快;逼近
adv
1. now and then or here and there
e.g. 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
Synonym: occasionallyon occasiononce in a whilenow and thennow and againat times