from time to time
有時,時常,偶爾
from time to time
adv : now and then or here and there; "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" [syn: occasionally, on
occasion, once in a while, now and then, now and
again, at times]